Guild challenge opponents

in regards to the training games are we now subject to guild challenge opponents based on individual rankings.. ie our guild has an average of 65 star quality rating with an overall 1.2 million fans.. we are facing a guild who average 100 stars with 2.5 mil fans.. why are we playing a guild that out weighs us both quality and fan base??
Check under 'guild challenge compatibility' topic...it's being discussed...you guys are not the only guild going through that...