User blog comment:CharaFlames05/CHARACTER BATTLE CONTEST/@comment-24223345-20160609215016

Genos wins against Yu Narukami thanks to: his wide array of weaponry, including his Anti-Saitama Arms (which ARE reasonably powerful). He has been shown blowing away things such as a giant concrete and steel tower, and part of a mountain (while punching Saitama). He also has pretty high levels of durability, including remaining "alive" after being shredded by the Deep Sea King, cut up by Mosquito Girl, and surviving his own blast (the one used on Carnage Kabuto) with only one side affect (his hair Afro-ing out). His metal body is very hard to damage, and if all else fails, he can use that self-destruct thingy to blow up Yu, Izanagi no Okami, and himself.

With all that said, Genos is a freaking wimp. I'm unsuprised if he loses.