I have a n Ad Set with 4 Ads ( 2 long copy - 2 short copy x 2 different images). One of the Ads generates more conversions that the other three ads. Which is great. But this same Ad has more impression and reach counts than the other 3 Ads as well. So, what I am struggling to understand is whether the Ad converts better because of the copy and the image or just because it has more impressions. Has anyone had this problem before? P.s. I know how to run split test campaigns, but they are typically testing to see which of two ads perform better, but I want to test like 10 ads in one set at the same time.