Well, I'd say as long as you're getting better performance and better quality in your games, who cares about the benchmark scores.
I mean, it's one thing to say "I got a 4,000 in 3DMark03" but it's even better to say "I can set my texture quality to MAX in xxxxxx game"
The games are what it's all about, it's probably just an issue between the 3D benchmark and the 3.8 Catalyst drivers that makes the score bad. Non-optimized something or other...
Good luck....
David