Shakyamuni Buddha of the Juryo Chapter is another name for Gohonzon.

“…Shakyamuni Buddha, within our minds, is an ancient Buddha without beginning, manifesting Himself in three bodies, he attained Buddhahood in the eternal past.. (Kanjin Honzon Sho)

Of all the Three Thousand Worlds present in a momentary existence of life, only Buddhahood is given a personal name. In light of this FACT, why do you state that Eternal Buddha is merely the world of Buddhahood within human life? 

Shakyamuni Buddha of the Juryo Chapter who Nichiren teaches resides within our life is explained by 3000 Worlds in a moment of life. Shakyamuni Buddha of the Juryo Chapter is another name for Gohonzon.