Yes it is because the ostheer doesnt face m3/m5 ,m20's or bren carriers. its bit ridiculous that the ostheer is the only one that has to face LV's before it counters and no panzerfausts are not counters.
Did you play vCoH? Historically, the Pak has always been part of T2 and some people in vCoH even skipped T2 entirely, despite the possibility of annoying early Greyhounds. While the Panzerfaust isn't there to annihilate anything, it still fends of light vehicles pretty well and gives you time to get your PAK out.