I did a little digging on what shoes the Pro Peleton is currently wearing and there is a trend towards 25mm tires but there isn't a consensus by any means and it doesn't appear to have a lot to do with rolling resistance. It appears that a lot of this has more to do with the fact that a number of the wheel manufacturers are making wider (supposedly more aerodynamic) wheels which work better with the wider tires. "Lampre-ISD and Euskaltel-Euskadi have stuck with 23c, as has Androni, Movistar, and Ag2R." All these teams are sponsored by companies without an ultra-wide wheel." They, of course, are getting their queues from the tire and wheel manufactures as to which tire/wheel combo will be the fastest for them. I think the little extra comfort of the 25mm tire is a bonus and not a criteria for them.
Nothing is ever as clear as we think it is.

Regarding the Bicycle Quarterly tests, I have a hard time believing there is no bias from someone who has both a professional and financial interest in the outcome of the tests.
BQ sells tires and participates in the development of Grand Bois tires.
Take out of it what you will.