If you are looking at peak power, you are in for a world of disappointment. Those are garbage numbers that should never be factored in any buying decision.
Also, If you are looking at peak power for an amp, chances are the amp is absolute junk. No respectable amp advertises peak power. Always go by rms, even then there are some amp companies that blatantly lie about that as well.
For future reference, If you blow subs just know that its not the subs that cant handle the power, its because your amp is weak and you turn things up because you arent satisfied with how loud it is and the sub blows from a clipped dirty signal. This is the case for almost all the blown subs out there. Always have more clean power than you need.