Saitama is super ****ing strong but that's all he has...KLK is probably more versatile which will score them the win in my opinion. Now if this was a knife edge death match, where competitors come up one at a time and slug it out with Saitama using nothing other than their manly fists, to see who drops first, no other powers included? Sure I'd give it to Saitama.
OPM is getting power increases out the ass though, I feel this will be one of those threads that will be resurrected later.