Yeah, the whole watts thing is a lot of smoke and mirrors...rms, peak, program and then how many channels are they counting? And yeah, I've seen the powered speaker list separate figures for each speaker.
I can find two different ratings for my amps in teh same owners manual...
I was taught growing up that ohms matter most - mismatch that and things release their magic smoke. My amps will do 8, 4 or 2 ohms, nearly doubling the output as resistance drops. More fun calculations!
Reading online the suggestions seem to be to have amps that will output more than the speakers ratings...I learned to do the opposite so you can't blow a speaker.
My current setup is PR12 or 15 speakers, 400w rating, and mackie M1400i amp that is rated at 250 or 300w (depends what page you read) at 8ohm.
I just wonder at times with my wimpy watts compared to what I see marketed today if i'm missing something.