I moved up to a 9 in 9ball a few weeks ago. 3-2 so far. One of my losses I just didn't play well, plain and simple. The other I played well, real well, just couldn't get any rolls and playing a 6 it ultimately cost me. I'd make a ball on the break and be hooked. Either kick and hit but leave him good or not hit it. He'd get ball in hand and run a bunch. That's the way it goes.
This week I played a good 5. It went the other way this week. I, again, played well (except for break, really struggled making a ball and getting good on the 1) and I got most of the rolls winning 75-18.
We've been playing double jeopardy for a few sessions and I was only playing guys my speed (so only playing once every 3-4 weeks) but as we're nearing LTC's and chance to qualify for Vegas I've been trying to get out vs the 5/6/7's and try them. Unless my break is working I feel it's going to be pretty hard for me to be useful to my team.
I feel like 8ball is a game where the better players have an advantage even with the handicapped races but 9ball, yeah, not so much. I think the 9ball is handicapped a bit more fairly. It's really good practice to take every shot seriously though and play safe unless you're sure you're gonna get out.