this is pretty crazy, because i just made a playlist the other day of all of the songs on my iPod produced by Dre; it was pretty unbelievable actually.
i didn't vote, man, because it is way to fukkin difficult to decide. I see it like this:
The cool thing about these to is that, when one of them do a song on an album, do you not call it "the Dre track" or "that Timbo joint"? That's not the case with many others, even when your talking about heavy hitters like Just Blaze, Swizz, Alchemist, Scott Storch, etc.
I would say Timbo has more talent, and maybe more creativity. His DRUMS are far superior and his melodies/harmonies/rhythms are busier and more complex most of the time.
It's still impossible to compare. Dre revolutionized production. Had Dr. Dre never come to be, there's no way of telling what road hip-hop would have gone down... its possible that many if not all of the producers of today would never have even gotten into the game, forget accomplishing what they have.
It's like comparing people to Babe Ruth; no matter what anyone else accomplishes no one will ever be able to surpass him, only join him.
Dre also constucts songs moreso than Timbo, who generally will just compose beats.
Timbo doesn't have the absolute classic beats of Dre either: all of The Chronic, Still D.R.E., The Next Episode, and i geuss you could even count In The Club, and there are obviously tons of others.
Still, it's impossible to compare. Dre is unheraldedly the champ, but it would be unfair to discredit Timbo.