All those names sell ppv, Leslie not so much.But here is the thing
Cerrone was a lead name in the Bjorn led union attempt. So was Cain, TJ & GSP & they get treated fine.
Leslie has been trying to unionize for years & she had a decent AC guarantee
Plus no way UFC could cut/retaliate if 30+% signed (like you said)
It makes no sense, but it is what it is.
ADD: Al Iaquinta is a big part of Project Spearhead (I did not know that) as well