As time passes Axiom does make changes, only they could give you a factual answer to the question... It was possible the specs on site are current with production of today's V3's. Based on what you have posted, your speakers are more efficient by 3dB's, however the site drops the freq response down 3Hz. In reality not much to worry about and most likely not audible to the user, especially if you are using a crossover.
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700