A direct hit would kill 1 guy and splash a few of the others for their shields a little bit of health. HEAT splash has been reduced to 5m, HE has been nerfed into uselessness with the extended reloads. Splash mechanics have been changed to remove 1shot-splashing, only your shields will die. Towers are elevated you can not splash the pads, you HAVE to hit them in their face to kill one and splash a few others, who will just wait for their shields to get back up. More often than not they lock/fire and than back off for the rest of the time a few meters behind to be in cover. Most of the time 10 of those 50 guys are exposed to at best 5 Tanks, while only 5 Tanks actually have cover against incoming fire and the other 45 Tanks are sitting ducks. More often than not Infantry is not even rendering unless they are firing at you to engage the threat render mechanic. Than there are still drop beacons, Squad Deploy, C4 on everybody except Infiltrators, Air mobility(Infantry can go everywhere using Galaxies). Instant revivals via Medics in the back, a down time of 45 seconds best if even those are not around. Infantry has all the cards in their hands in Zerg fights, there is no denying this in any shape or form.