generally, there is so much to review, reviewers choose wisely based on what they think many readers will want to know. the air is increasingly popular. and of course, most want to know about the rmbp. so little was changed with the regular mbp, that it is not as much a priority. that said, i have no doubt that the 2012 13 mbp is a great machine. i'm typing this on my 2011 13 mbp, and i imagine the new one is a hair snappier. so i'm not sure a review is really revelatory.
most reviewers would probably suggest the air or the rmbp upon review, as they don't see much that is special about the 13mbp. but remember, it is the big seller, and i think that it is the best compromise of features in the lineup (cost, size, power, etc).
besides, don't all reviews read about the same, after a while?! 😛