In the US, the rating of an amplifier at 8 ohms is the amount of power the amp can output into an 8 ohm resistor for an hour without melting down (unless this changed lately when I wasn't looking). A more conservative rating would be 20-20KHz, which simply replaces the 8 ohm resistor with a variety spanning the range. Neither rating means anything in the real world.
Music is highly dynamic, and loud passages requiring the maximum output of the amp last fractions of a second, not hours. Further, a speaker is not a constant impedance load, but rather a variable one that changes with the frequencies going into it. So, manufacturers started building amps that had lower ratings, but greater dynamic headroom, that is, the ability to output an amount of power greater than their rating for a short burst of time.
A 30 watt amplifier with a lot of headroom can actually power speakers much better than a 50 watt amp that has none.
This is my long-winded way of saying that there's simply not enough information to answer the question.
FWIW my main amp is rated at about 65 wpc, and can play B&W Matrix 804's LOUD without clipping. It's also got a huge power supply, and I suspect it may have a few watts in reserve...