I have a new theory about how we could see the results we are seeing.
I’ve now done about 40 PVP’s since changing guilds and I am still getting 66 point matchups (and others over 60) and I’m beginning to think that I won’t get a downward change in the upper range (I’m pretty sure if it was going to happen, 3 days and 40 battles should be enough to flush through my old matchups). In fact, I’m getting so many 66 point matchups (roughly 25-35% of my offers) that I think if I was willing to burn some gems, I could probably do nothing but 60+ matchups. Assuming that the offers that I get stay consistent, if I were going to do 300 PVP battles in a week, it would probably only cost me about 500 to 1000 to make every match a 60+ point affair.
Bottom line: I think a high level player in a guild that doesn’t complete tasks, that is willing to spend a significant amount of gems, could generate the kind of results that you two are seeing without any code-weirdness or shenanigans.