You can compare traffic only if sending to a same web page. Cam sites change models online depending on time, may land on different model at same time on a random choser, and model change view every landing of every guy even if after a minute you get the same girl showing tits or gone away to pee and an empty sofa there, will convert worst then a minute before, you see?
Additionally, choker have dozens of niches, and you can blocklist some sites (example, will you blacklist shemale sites or not, etc.), so the configuration of filters can change it all.
Cam sites themselves (not the affiliates, the cam site) sure know what traffic converts best but will not share such information in GFY, especially if you find a good source you hope the other cam site not buy it (making it scarce availability ormore expensive), also you always hope the competitor will waste money in crap traffic so you not to warn others where the crap it is.
For example I buy from choker, trafficshop, trafficholder and others for my cam site(s) which is not a whitelabel and I not give white labels to affiliates and I have all my data but sorry I don't share. I can say I still buy from choker so unless I am a complete idiot, it converted better then something else (considering the else may cost half per K must convert more then double it). Of course the search engine or cam plugin in member area converts some 10,000 times better, still there's not a broker who send you "member area traffic" in thousands, you have to go lick the ass of each program owner to put you in the member area and this is so boring I prefer pay brute force dollars to traffic brokers
