edit: Looking at the list (thanks Zarator), there are a LOT of pokemon who were "formerly BL" who are now in NU (Ramparados, Entei, Pinser, etc. etc.), while most of the good "formerly UU" pokes are still UU (Clefable, Steelix, [Scyther!? really??]).
That just serves to make me think even more that "old UU" was really screwed up. xD
That's a really narrow way of thinking... not to mention completely wrong considering you miss the idea of competitive play... you're essentially undermining everyone who ever played old UU with that phrase.
Old UU was different
from New UU is how you should look at it. It's a completely different metagame so I'm curious why you're comparing banlists - depending on the Pokemon and Players available, you'll end up with different ideas of what is broken. To say the old UU was "screwed up" because the banlist and the metagame was completely different from new UU... I'll let you figure that one out yourself since hopefully you're capable of doing so.