hell, vet 3 rifles with 2 bars can literally charge over open ground, and consistently kill vet 3 lmg grens in green cover.
Source? Because judging from my experience this is far from true.
imo shermans are the best medium armor since it can come out pretty fast, costs 110 fuel, and has the highest squad wipe potential with HE rounds as well as having the best mounted MG.
For sure, the Sherman is a beast and doesn't incur the big teching penalties Ostheer runs into when trying to get T3.
The problem with panzerschrecks is that pretty much every OKW squad will have them and are incredibly easy to use. Just a-move to the tank. They almost never miss. Not to mention they are the perfect supporting AT. I guess OKW needs it since they lack a good AT gun but it just makes OKW even easier to play than it already is since you need not worry about good positioning with your volks/rakketenwerfer when comparing them to traditional ATGs.