It's an 220W CPU, what did you expect on the temp side? It needs an high-profile liquid cooler such as H100 or better. At least that's what I run it on.
Memory benches - you don't say? Intel goes on quad-channel while AM3+ is still on dual so of course the bandwidth will be smaller. Also download Sisoft's Sandra and run those - it's one of the remaining benchmark suites left that's unbiased on one way or the other. (*cough* Cinebench *cough*)
CPU on games is pretty much not the factor these days, only a couple of games are CPU bound like Civ5, others are more demanding on the GPU and the CPU leaves an 1-2FPS difference in games for Intel, doubt you'll even notice when your FPS is around 80-100 at that point.
The final thing is, you gotta understand that your CPU will eat everything that will come out of your wall socket and be prepared for the bill also if you decide to keep it find an high-end cooler for it, as I said, it's 220W man - it WILL get hot - you need something good to keep that beast under control - even the water cooler that comes with the 9590 in the box is not enough in most cases.
Also, it's already been said that this CPU is more of an niche for AMD fans anyway, AMD just pushed to limits on PD and released it although it's just an cherry picked 8350. This CPU is not meant to be an "blow" at Intel, at least that's how I take it.
Oh and I bought it when it was on €270, currently it sits on 320 here and for that money, I wouldn't even take it anymore even though I am an hardcore AMD guy. But all in all I'm happy with it.