Those Eagle teams of that era were up against some great competition. I've always wondered if they would have cut into the Cowboys dynasty if Jerome Brown hadn't been killed.
Eagles problem throughout that era was consistent- terrible O-lines.
Unless they fixed that it would have never changed. So many busts at that position historically for the Eagles. Its only recently that they have had good O-lineman. When the Cowboys came along in the 90s they redefined the game with speed... the Eagles were a strong, plodding team so they didnt fit there either.
Bad timing!