IMO '89 was more talented and a stronger team overall. The BIG was a physical conference and loaded with excellent teams. I forget the injuries that year, but someone was down for a number of games after we hit #1 in the polls (I was at the Georgia Tech game when we came back to win that one -great memories of that insane comeback). Anyway, the 04-05 team I believe was healthier. 04-05 was a magical season, and it's hard to put a value on the will to win that group had.
It would be interesting to add up the NBA games those teams rosters eventually played in. I think 89-90 would win that comparison easily, even though Deon played internationally after being drafted. Anyone know why, btw, he took that over the NBA?