all 3 hitting at once.

It is AP, which those others are not, and it has the temporary cavity advantage,which those low velocity rds dont have, and it has 600 total ft bls, same as those 3 have. since it's a little hard to fire 3 guns at the same time, the 356 is quite a stand out in pocket pistol performance.

I'd put it at least equal to having a 9x19 in each hand (getting equal hits at equal speed) using the best factory 115gr jhp's, in the same sized guns. Being 100% more capable, in the same size and wt package, is a pretty worthwhile improvement.