A-net could remove most doubts about the matchmaking by showing the MMRs of everyone in a match. Until they do I have no reason to 100% believe them. It doesn't have to be they are lieing either they could be mistaken themselves about there own code or it is sometimes acting in ways they don't fully understand. Smarter people then there coders make mistakes all the time. Blind faith is for little children. As for the evidence being anecdotal well they refuse to give us the full information that would prove themselves 100% correct so that's all I can say about that. I feel like when the playerbase makes a request devs should fullfill that request if it is reasonable. It would take little time to add a pvp window with both teams average MMR and the MMR of every player in the match without the names attached and possibly even the win probabilty they have calculated. More information is always better.