Take last 3 Pak COAS, Jehangir Karamat, Musharraf and Kayani, they had no allegation of a personal nature as him.
I was a little surprised to see your assessment above.
From an outsider's point of view, it seems that General Karamat was a very fine officer and a man of integrity, though a mite touchy, but also, he seems to have been third in a succession of very good Pakistani chiefs. Was there any question about Asif Nawaz or General Kakkar? It does seem that they all three calmed and stabilized things, after the melodrama that preceded them. Is that not true?