The current type 4 launcher is unable to reliably kill the pershing and sometimes the jumbo even from the side.
Unless you get a perfect 90 degree angle you rarely have the chance to pen a pershing that is just sitting there.
Please go ahead and try out the type 4 VS pershing in the practice range and try to blow it up with even just a tiny bit of an angle. It is nearly impossible.
The worst part about it is that the BR 4 paras get the better pen type 5 launcher that does not have this problem.