Forget the use... and this answer will not answer your Q as to which is better.
Your question is about power. Bulldozers have power, more than many mercedes put together... but that doesnt help.
Distortion is what is the limiter. compare the THD of both at their rated power and you will know the difference.
About which is stronger or weaker, I dont know, and apart from the above explanation, you will have to get in touch with an electrical engineer....
KD