It is impossible to make a meaningful comparison between a marketplace like SH that mandates using their landing pages, and requires exclusivity (may not list anywhere else), because there is no way to list simultaneously the same domains at SH and...someplace else.
The closest comparison you could do is to list the EXACT same domains at say, some other marketplace, using their landing pages, and NOT listing anyplace else, for say, six months, and then listing the SAME domains at SH for a consecutive six month period (or, vice versa, listing at SH first, and then someplace else), however even this test wouldn't necessarily be reliable, because what if a few names sold at the place you first listed them at, during the first six month period, and then none sold at the second marketplace. Would this mean that the first marketplace is better, or simply that the better names sold off first and what was left wasn't saleable?
It really doesn't take a genius to realize that a claim like
<<If my calculation correct SquadHelp sold more domains than BP [or BB]>>
or anything along those lines is completely unverifiable, and more importantly, irrelevant even if it were verifiable. Since SH is an exclusive marketplace, that means that names listed there may not be listed elsewhere so it's absurd to claim that SH is selling more domains, even if this were true, the domains listed at SH are not listed for sale anywhere else, so, what are you comparing anyway? You're not comparing the same domains.
Unless there is a way to compare the exact same set of domains listed at both SH and someplace else simultaneously, you will always be left guessing as to whether one marketplace or the other is better.