BYU has other guys that are good, and can do good enough. But you are not looking for good enough. You want elite.
Koroma was 1st team freshman all-American. He has a combination of skill, strength and quickness no other center has.
It is not shock value or hyperbole, it is fact.
If you want to win big games, you need an OL that lets you. Without Koroma, BYU OLin 2015 is not as good. That is the fact.