All that matters is that the machine said "100% gammafication". The origin of that energy is nominal. Hulk was reduced and then restored to what he was at the end of WWH #5. Red Hulk later fought that Hulk and got humbled without even seeing Worldbreaker levels of power, in fact Red Hulk tried absorbing power from him but it didn't help him. There is no way he is equal in power to WWH #5 Green scar.
Anyway, Sentry loses the shit out of this