It kind of depends which variant of the Tomcat to me.
F-14A (1970-80s) - MiG-23M, MiG-25 and Su-15.
F-14B - MiG-23MLD, MiG-31.
F-14D - Su-27, MiG-29 and MiG-31.
As far as other Western aircraft. I've heard the F-15 always gave the Tomcat the most trouble in mock fights.
To think, a simple software upgrade would have allowed the Cat to use the AIM-120 instead of being stuck with the AIM-7. :(