I don't see how people are claiming Thor is overrated, myself. Aside from that jackass troll who always says as much, yet can never seem to cite said posts or threads where people claim Thor pwns Galactus or that RK Thor is above TOAA, I don't see it.
I will say that DC and Marvel company "loyalty" (and likewise always pulling for characters of said company in threads) is beyond overrated. I can't see how you can remain exclusive (or close minded) about one company and claim you know what the hell you're talking about when debating against a character you've not read about before (and no, respect threads do not count as "reading"😉.