pool average fluctuates a lot but overall average is about 1-2% better on phoenix than running claymore, hashrate doesnt matter, accepted shares do, which is why i based my comparison on that number.
other differences are that phoenix doesnt have any fan control or clock/voltage modification where claymore does, and on my rig, even though i see more hashrate with pheonix, i see 10-20W more power consumption as well.
Over a 10 hour period I had 100 more shares on Phoenix. Granted that can be luck or it can be the program. I get about 5 more hash then claymore. Claymores reported is also 2 m/hs lower at the pool then what is reported in the program. Phoenix follows the reported on the miner right through to the pool. However I keep getting devfee errors and have to resort back to claymore until it's resolved. It keeps hanging up after a couple of ETH shares are found on Phoenix.