Awesome, thanks a ton! Found out there's apparently a cheap omnibus that has seemingly all the Infestation stuff for a real low price, so I added that and Mars Attacks IDW to my IST wishlist!
Hm... kind of a rough thing to compare. One Punch Man is a completely different beast than most anything. It's all comedy and insane, almost show-off-y displays off artistic mastery. It really is it's own thing, but it's a ton of fun and I can't wait to grab the print copies that are FINALLY going to be coming out over here.
And My Hero Academia does have a decent number of chapters, but it's still pretty early for one of these things for my tastes. But for what it's worth, it's definitely been my favorite thing that's running weekly in the American Shonen Jump, outside of One Piece. It's definitely a fun one, and as has been said it really is a love letter to the American side of comics, with some nice distinct twists.
Really recommend either series, easily.