Interesting question.

Their SPL specs is almost identical - 89 dB/W/m and the M60 rated power is just slightly higher than that of M22 (250W vs 200W). The way I understand it if I listen to them at the same input signal power, at the same distance, and at the same speaker placement relative to the wall they should sound the same.

There could be some difference because of the room gain which is more sensitive to the lower frequencies which M60 is much better to produce. On the other hand, if you use a sub crossed at 80Hz this difference should be minimal.

Is my thinking too simplified?

Regards,

Gena