[Rolando]

It can make sense as a very high rate of fire infantry sized gauss weapons and/or better sensors to pint point infantry sized targets.

The weapons are not powerful enough to puncture vehicle armor but shoot so many bullets that it increase the effectiveness against infantry.

Edit.
In fact, you may say that as the squad is carrying heavier infantry weapons (tripod gatling gauss guns or just bigger gatling gauss rifles with backpacks o ammunition) they don't have the anti vehicle missiles, so they have A2 vs infantry but can't attack vehicles (similar to AP guns in OGRES).

This may be a good infantry type for defense in urban centers, even a Militia version, just that they may be effectively immobile as carrying the heavier gauss gatlings should be impossible for non battlesuited infantry, unless they also have some kind of carrying vehicles...