Have to love it when people quote sponsor ratios as if they mean anything when comparing to a different sponsor. Unless you use your own tracking for clicks/sales the numbers are totally meaningless.
There's a LOT of people in reality doing 1-2000 or worse on a few of the bigger sponsors who still think they're doing 1-400 or better because the sponsor stats say so
Some of the sites look great though so certainly worth a shot. As has been said unless you've been beta testing it then it's a tad too early yet to say how well they'll do.