With respect Tybo, I just glanced through the game, but it doesn't seem to end well for you!
I presume, it came down to tech and you ended up stalling after T2, that is also something I struggle mightily in at least a third of the games I play. I end up undecided whether I have the time for tech and the pressure on the map to hold my fuel, and whether i'll actually receive any equity from tech, or to go for a tiger/ferdinand. I can never seem to analyze the situation correctly during battle.
Oh no, not at all. I'm only a mediocre player, I just thought it was a cool use of panzer grens. I didn't even submit that game :x
I always fail to tech quick enough as ostheer and I don't have a prescribed idea of what to build in my head like I do with soviets so my timing is bad. Manpower is always a sticking point as ost for me, hence why the cost of PGs is unappealing.
Another point I forgot to make: PGs work well paired with an lmg gren squad - few units can outshoot them at range, and PGs will make it difficult to close. Don't be tempted to put PGs in front though, keep them behind slightly to react to an encounter when possible. In my experience enemies will always target the closest unit first time they engage and keep shooting them until they can't (unless the player gives them a manual target order) so getting them to shoot at grens first while PGs position to cover is ideal. Losing guys from an lmg gren squad is cheaper and won't drop your DPS as heavily as losing a PG.
I could be wrong on that, I'd have to double check how unit AI works before human input.