NOT SO BIG.
see, if the great Beings was inspired by the Agori to create the Matoran, some form the beings of Bara Magna maybe looked Mata Nui in construction. For which they did a statue to him in his honor bearing in mind what was.
But when they finished the statue. The disaster that hitted to Bara Magna happened, the statue brokened in pieces in the middle of earthquakes.
And another thing, I believe That the Great beings, Incluiyed MATA NUI, have the fault of Bara Magna's disaster. I cannot affirm it, but I believe that the "Mistake" that happened in the creation of Mata Nui. was Bara Magna's disaster