Hmm...my 2e dwarven fighter had about 140 hit points. His damage potential wasnt' huge (say 75 or so?), but he had a vorpal sword that cut off heads on a 17-20, no confirmation. The DM in that campaign allowed you to buy/comission just about any magic item in the 1e DMG for thelisted price. I'm sure I could have pumped my damage up over 100 per round with a girdle of giant strength. I just thought that chopping off heads was more fun.
Many old time DMs would probably say this guy was crazy for letting players get hold of items like the girdle of giant Str or especially the crazy deadly vorpal sword. I think the high availability of "any magic item you want" is probably the biggest power up in 3e. The power was there in 1e/2e, most players simply never got it. I'm not saying that's good or bad, just a change in the attitude of 3e.
Another factor is that many DMs still base the ability scores they let players ave on 2e norms, where you had to have a 15 in a score to be measurably good at it. Combined with wacky races becoming more standard this leads to some crazy combos. I am currently playing a (Krynn) minotaur who started the game with a 22 Str, 16 Dex, and 16 Con. The DM seemed surprised that I was tearing up encounters of the party's theoretical EL all by myself. The character isn't particularly well crafted. He just has crazy high ability scores. Of course our druid with Augment Summoning can summon hippogriffs who fight nearly as well as I do, so maybe I'm not that insanely ahead of the curve after all.