Edited for clarification;

I'm sure there's going to be opinions on this, but I'm just curious. In a pure turning post merge engagement just using the gun, which airplane was better, the original F8 or the F4?

I know there's a ton of factors that can skew it, like pilot training/proficiency etc, but which airplane could out turn the other?

Where there differences like at which altitude the engagement that might make one batter at lower altitudes and the other better at higher ones, etc?