Although the lap times will most likely be quite close, the subjective driving sensations might be significantly different at speed. The aerokit would most likely lend itself to greater stability in the corners and on the high speed sweepers. It would probably be much more confidence-inspiring and nicer to drive. However, the lap times will not differ a ton, since it might be marginally faster in the corners, yet significantly slower on the very fast part of the Ring (near the start-finish line).