Compare and Contrast

Nichiren Daishonin taught: 

"However, even though you chant and believe in Myoho-renge-kyo, if you think the Law is outside yourself, you are embracing not the Mystic Law but some inferior teaching. 'Inferior teachings' means those other than this sutra, which are all provisional and transient. No provisional teaching leads directly to enlightenment, and with out the direct path to enlightenment you cannot attain Buddhahood, even if you practice lifetime after lifetime for countless aeons." 
Major Writings, Vol. 1, pp. 3-4 

"You must never seek any of Shakyamuni's teachings or the Buddhas or Bodhisattvas outside yourself." 
Ibid., p. 4 

"If you seek enlightenment outside yourself, any discipline or good deed will be meaningless ... Miao-lo therefore condemns such students of Buddhism as non-Buddhist. He refers to the passage in the Maka Shikan, 'Although they study Buddhism, their views revert to those of non-Buddhist.'" 
Ibid.

The Nikken sect reverts to the heresy of non-Buddhist by "teaching": 
"When the priests and lay believers of the faith of Nichiren Shoshu have the occasion to be in the presence of the high priest, with palms pressed earnestly together in sincere gratitude, we pay prayer-like reverence to him as the Master who embodies the Living Essence of the Body of the entirety of the Law of all existence, which has been passed down through the generations since the lifetime of the Daishonin. It is therefore important that, from the viewpoint of acquiescing to his possession of the Body of the Law, which should be thought of as the source of the significance of the Daishonin's Buddhism, we not just listen to, but, deep within our lives, truly hear the high priests messages of guidance to us." 

"In short, with perfectly sincere faith and self-imposed, strict obedience, we should hold the high priest's instruction in deepest reverence — and we must realize that it is right there that the great, direct path of the true relationship of unfiltered, unrestricted faith between Master and disciple, which leads to ultimate enlightenment in this lifetime, is to be found." 
Dai-Nichiren Special Edition (II) 1991, pp. 13-14 

And: 
"Your local priest is your teacher representing the high priest who is equal to Nichiren Daishonin. This is shitei sotai (mentor/disciple relationship). Believers' only concern should be to worship the priest, obey instructions and give gokuyo (money). This is the practice of correct faith and the path to enlightenment." 
—Supplement to the Japanese original of the Dai-Nichiren Special Editions, 1991
Nichiren Daishonin teaches: 
"Shakyamuni who attained enlightenment countless aeons ago, the Lotus Sutra which leads all people to Buddhahood, and we ordinary human beings are in no way different or separate from each other. Therefore, to chant Myoho-renge-kyo with this realization is to inherit the ultimate law of life and death. To carry on this heritage is the most important task for Nichiren's disciples, and that is precisely what it means to embrace the Lotus Sutra." 
——Major Writings, Vol. 1, p. 22 
And: 
"All disciples and believers of Nichiren should chant Nam-myoho-renge-kyo with one mind (itai doshin), transcending all differences among themselves to become as inseparable as fish and the water in which they swim. This spiritual bond is the basis for the universal transmission of the ultimate law of life and death. Herein lies the true goal of Nichiren's propagation." 
—Ibid., p. 23 
Nichiren Daishonin also wrote: 
"How admirable that you have asked about the transmission of the ultimate law of life and death! No one has ever asked me such a question before. ****I have answered in complete detail*** in this letter, so I want you to take it deeply to heart."
Ibid. p. 23-24 
The Nikken sect "teaches": 
"If lay believers speak as if they are equal to priests, they lack propriety, and will destroy the order between priesthood and laity.... To talk about the priesthood and the laity with a sense of equality are expressions of great conceit. In fact, they correspond to the five cardinal sins -- to destroy the unity of Buddhist practitioners" 
—Nichijun Fujimoto, Chief Administrator of Nichiren Shoshu, in a Jan. 12, 1991 letter to SGI. 
And: 
"A priest who wears this robe is special and different from lay believers. He is always seated with the Gohonzon behind him, but whatever the priest may do on other occasions and no matter how luxuriant his lifestyle, it is totally all right. You lay believers are confused about this point. These matters are of no account." 
—Sedo Oyabu, Horin-ji temple, Jan. 1991
Nichiren teaches: 
"The Zen sect claims to represent a special transmission apart from the sutras. Their views are as distorted as the eyesight of a person who mistakes east for west or who cannot tell north from south. Their understanding is inferior to that of cattle or sheep, and their teachings are as ambiguous as a bat, [which is neither animal or bird]. How could they not feel terror at defying the Buddha's words: 'Rely on the Law and not upon persons'..." 
Major Writings, Vol. 4, p. 121 
In conclusion ... Nichiren wrote: 
"In that age there will be evil monks who will do violence to this sutra and destroy its unity, losing 'the color, scent and flavor' of the True Law that it contains. These evil men will read and recite this sutra, but they will ignore and put aside the profound and vital principles that the Buddha has expounded in it and replace them with ornate rhetoric and meaningless talk. ... You must understand that these evil monks are the companions of the devil." 
Major Writings, Vol. 2, p. 179-180 
Like the Zen sect the Nikken sect claims to represent a special transmission apart from the sutras: 
".... because the enlightened life of Nichiren Daishonin, or the Body of the Law of the Three Treasures of the Buddhism of Sowing continues to exist through the ****transmission of the Face to Face Bestowal of the Living Essence of the Law**** to the only one who is to receive it, we are being strictly directed to believe in the existence of that enlightened life within the body of each high priest." 
Dai-Nichiren Special Edition (III), 1991, p. 1-4