Have you heard of Bob Paisley mate? He didn't have Ferguson's longevity but 6 League Championships, 3 European Cups, 1 UEFA Cup and 3 League Cups in 9 years isn't bad (and that was in the days when winning the League Cup meant something).
As for Fergie's European trophy win with Aberdeen, the Cup Winners Cup was by far the easiest European trophy to win, most seasons you only had to beat a couple of decent teams to win it