Aesir23 said:
Personally, I do consider him as a Mary Sue since, the last time I checked, his only weakness was Kryptonite and he had a buttload of superpowers.
It probably doesn't help that I prefer my superheroes to have more than one weakness, to have limitations and a sense of mortality since it makes their deeds seem all the more heroic and a bit more thrilling. With Superman it felt more like "all in a day's work".
He's also really weak to basically any form of magic as well as cosmic powers, and really any incarnation since the 90's can be stopped with a good old fashioned punch from any big hitter (Ever since Doomsday killed him in the 90's he's been vulnerable to getting a good old fashioned ass whooping). Since the new 52 reboot over a year ago he lost everything beyond his basic powerset, and can't even fly anymore. As I mentioned earlier in this thread, he got stopped cold by a Wonder Woman B string villain named Cheetah, who used a magic curse in her bite (so yeah, apparently sharp teeth can bite through his skin now too).
Still, even before the reboot, kryptonite kind of got tossed by the wayside in favor of magic and other weaknesses. Most of his ridiculous powers from the golden age were removed back in the 80's. Since then, his powers have always pretty much been: flight, super strength, super speed, durability, and his super breath and eye powers, with some variation depending on the writer.
He gets beat down pretty regularly actually, especially in titles that focus on other characters, beating the crap out of Superman is practically every major villain's introduction at this point.