Just look at an Axiom M3 frequency response graph. That's basically what it is. It would be measuring the same tweeter and the same 6.5' drive unit that is in the Air (same crossover etc). The only thing that should differ greatly is below the Schroeder frequency. The specs state the same frequency response but with the larger box of the ported M3 bookshelf, the amplitude it can put out at the low end should be greater than the Air.
I don't think so as it's all packaged in a completely different shaped box with a different orientation of the speakers. If what you said was true, then the upper part of the graphs would all be identical between the M2, M3, M22. They are not.
