Don't play the number game...They lie!!!
Listen to the amps/speakers...The best, and loudest amps I own are rated at 100 watts..I even compare my amps at 60 watts..to others rated 5 times higher in numbers..
Same old story..don't even look at the numbers...play the dang thing and when you are happy with volume and quality of sound...take one more step...check and see if you have more head room from your comfort point, without degrading the sound..
If so you have a winner, no matter what the numbers say..