Well, both are good, its just that the main advantage of the G-2 is altitude, without it you wont do much in it and nowadays it gets outclimbed by a lot of stuff, with the F-4 you can at least somewhat counter the enemy when they are higher other than just running back to base, it has much more maneuverability than the G-2 and is way better energy fighter. If you want to really see the difference, here is one of my videos where I managed to beat 2 109G-2s in an F-4: ukposts.info/have/v-deo/qpaGi4-wo392wGg.html