I'm not surprised the i4 can't keep up with a Model 3 in these tests, but I think that's fine. If the i4 base suspension is tuned more for comfort than maximum handling response that seems like a reasonable product decision. Does BMW offer a sport suspension option for the RWD i4 though? Or do you have to get the M50 to get a sportier suspension?
I doubt even the i4 M50 will quite keep up with an M3P in these tests, that would be a tall order with 1000 lbs extra weight (without compromising other aspects of the car). I sure hope the M50 bests the base i4's results though!