I think a lot of the beauty of the M2200 is it allows you to put the power where you need it!
Also, make no mistake, the MX5000 is nowhere near the equivalent of multiple M2200's!
If you are truly going to use multiple channels, The Yamaha MX5000 is pretty much an Outlaw 5000 but supposed to drive 11 channels!?
If we look at Gene's comparable 5 channels driven measurements:
5 ch 1kHz Psweep 8 Ohms 0.1% THD:
MX5000 = 138 Watts Outlaw 5000 = 139 Watts
5 ch 1kHz Psweep 8 Ohms 1% THD:
MX5000 = 144 Watts Outlaw 5000 = 148 Watts
5 ch Dynamic PWR 8 Ohms 1% THD:
MX5000 = 205 Watts Outlaw 5000 = 212 Watts
Now, it is true that the MX5000 puts out 177/250 CFP-BW into 2 channels at 8/4 ohms and the Outlaw 5000 is rated at 170/230 under the same conditions (not a very big difference); however, the fact that the Outlaw (marginally) beats the Yamaha when 5 channels are running indicates that the $600 Outlaw actually has more capability from its power supply (transformer and capacitors) than the $2500 Yamaha MX5000. You would expect the 11 channel Yamaha to have a much, much larger power supply than the 5 channel Outlaw!
I'd imagine if you connected 11 speakers to the Yamaha it would not be pretty
https://www.audioholics.com/amplifier-reviews/outlaw-5000/measurements
https://www.audioholics.com/av-preamp-processor-reviews/yamaha-aventage-cx-a5000-mx/processor-and-amp-measurements
@PENG (or anyone else),I am more than a little uncomfortable making these statements as factual - I am stretching my understanding of power ratings and amp design! Please do not hesitate to make corrections/elaborate! Thanks!