The american pak howizter always seem to do much better than the OKW.
Appears more accurate to me as well, but maybe I am just unlucky?
Anyway, I enjoy the Support gun to deal with blobs and it profits from veterancy as well, but I noticed it does not do particularly well as a counter against machine guns for price. On some maps this is doubly unfortunate because also the Wurfrahmen doesn't work there because the rockets just land in trees instead.