Erm, it doesn't sound like you are hearing us, the performance is easily shown, my car made much more power. We have said that the drag strip will not make much difference against another car with similar headline power. My car would be much faster up,the strip now as 330 bhp vs 470 would make the difference but if you have a t4 at 400 bhp and efr at 400 bhp I doubt there would be much in it on a draga strip, on the road thent4 would be left behind on give and take roads with lots of speed changes such as roundabouts.
Most people will go to efr to add power though I.e. They are at 300 and want 500 bhp

So, drag strip, doubt much difference, road lots of extra performance.