Any info you get would still all depend, on what traffic there targeting, free bonuses or quality traffic, what country the traffic is from etc etc
Also sample size would be too small, one whale can significantly distort the figures your requesting.
So basically any info you get would be pretty meaningless. The best thing to do is trial out different sponsors with your own traffic and see how you get on. Of course find recommendations for good convertors for traffic similar to your own, based on how those sponsors are performing for others.