no they are not.
for one, the reveiews are done ddifferently from last year.
Madden 11 most likely got a 9 based on past Madden's, and maybe taken into consideration other football games,. which last I checked there werent any. so Im sure they compared it to probably 2k5, apf2k8 and Backbreaker. those probably still hold some weight.
2k12 gettinga 8.5 is cool. Iwould have gave it a 9 or 10, cause I dont play online and rarely play the My Player. I usualluy play the bulk of MY PLayer mode during the summer, so by then the game would have been patched a few times.
so I wouldnt have noticed all the discrepencies/issues.
with that being said, the gameplay, presentation, etc is awesome as usual. 2k never disappoints me. some years are better than others, but thats expected.
IMO, The evloution of the game is superb.