strumminsix--I would tend to agree with your score on Brent vs. Keith, however for me, it comes down to this:
Which would I rather hear? A tasty 72-73 or anything from the Brent years? I would take 72-73 in a heartbeat. When Keith was awake at the keyboard, nothing topped him.
Just like there's no I in team, the individual mano-a-mano would favour Brent, but taken as a whole, Keith wins.
Bro, you got me on that one. I am a 73-74 fan all the way . But, it has nothing to do with the keys. Like you started, it has everything to do with the team. They had unique energy and a single drummer allowing some quickness and they were still so undefined from 1st set 2nd set norms and there was raw energy. Then you have the 77 - 78 when there was passion from a hiatus, and playing in Egypt and closing Winterland it was pure pleasure. But again, not for the keys.
And during those times Keith managed to stay awake during whole shows, well at least a couple, well, err, maybe
Personally, I wonder some days what the GD would have turned into if Brent joined on in 72 instead of Kieth and Donna. Granted he would have been on the young side, I think, but I wonder none the less.