The answer is, maybe, depending on who is controlling the volume... but the simple fact is they will never need that much power. The new Mag is designed with efficiency in mind so is using a shorter, lighter, voice coil with a more efficient motor topology. The design should still take 1300 watt dynamics in music, but I nor Nick would suggest that much power constantly as you will destroy the speaker.
But, if you really want to be dumping 1300 watts into a speaker all day long perhaps an SQ sub like the Mag isn't what you should be looking for.