Nowadays a dogfight between powerful nations is going to be driven by stealth, sophistication of ECM and counter measures. Take a 2 F15s and 2 F35s and they are straight into merge dogfight then the F15s will likely win. Put those same planes 150 miles apart and the F35s will shoot twice before the F15s even see them due to their stealth.

There remains a place for this type of aircraft purely because nations don't have sophisticated stealth counterparts or the same level of sophistication of anti air but its a dated design however many upgrades you throw into its avionics, engines and radar.