They could claim to be what they think sounds best. lol
But at the end of the day u can only work as hard as the weakest component.
I would go more amp power as thats what creates the power.
But to make it more confusing, amplifiers can give more power if run with multiple speakers as this lowers the ohm rating.


1 speaker 8ohm usually.
2 in row 4 ohm
3 in row 2.6ohm
4 in row 2 ohm
Output Power both channels driven (rms)

For example (void acoustics amplifiers ratings at different ohms.

Infinite 8 8ohm=2 x 1300 4ohm=2 x 2400 2ohm=2 x 3700 4ohm bridged=1 x 7400

Hope that helps.

But It may make things more confusing.