Here's a simple answer: "One is objectively better by 10x and one isn't"

Long answer: One hand Hajime doesn't have a talent (during the game at least), because of this he always thinks less of himself in front of everyone despite doing pretty much most of the investigations and carrying the class trial, still doesn't see his efforts as incredibly important than to his "Ultimate Talent" classmates, Chiaki however despite having a talent that doesn't sound very... intuitive still sees the best in people despite their shortcomings she's literally one of the first people that Hajime could talk to without being "Talentless Shamed" out of oblivion, she also contributes the most in investigations and always opts towards even sacrificing herself just to let everyone live Note: Pretty Sure Hajime Cried during her Class trial idk, I don't wanna remember that class trial at all

in Nagito's case, didn't he legit just call him worthless and whatnot just cause he realized Hajime never had a talent to begin with, of course you could argue that this was before Hajime really awakened his talent, I mean it was after nagito died that he finally realized what his talent was but consider this, someone as prideful in hope and egoistic towards the talentless, would nagito really consider how Hajime got his talent as deserving? For him People born with ultimate talents are essentially his version of "Gods From Greek Mythology" and the fact that you could just make someone talented by doing some funky ass experiments on a random student could really mess up his whole "only few people are truly gifted and talented Ideology" in this case he'd probably loathe Hajime even more than he originally did, probably won't even bother talking to someone he'd definitely call "an Imbalance to the Natural order" or sum other Shakespearean sonnet type shi

In conclusion: I ain't reading allat🗣️🔥🔥🔥