I think there is another hole...

[plloyd1010]

Not so sure about Jagdpanzers. While crewed by artillerymen, There is quite a difference in their training and mission. This is especially true for the Americans, and largely for the British. I recall an anecdote (8 Days at Bastogne, I think) of a tank destroyer commander insisting that he and his men were going to fight like they were trained to. They did pretty well too.