RPG Launcher to Advanced Rocket Launcher upgrade vs. Armor

[rkagerer]

I've been cleaning out older weapons to make room for their newer counterparts.

The RPG Launcher has an RPG Anti-Tank Rocket with Armor Effectiveness 0.75 (and Armor Degradation 0.3).
Is there a reason the Advanced Rocket Launcher, with its many more ammunition options, doesn't have a rocket which performs as well or better against armor?  (Or are you supposed to use its Incendiary Rocket for such targets, like say a Sectopod cluster?)

Thanks!

[psavola]

Shrapnel rockets will shred almost every unit to pieces. Including sectopods.