Benchracing: Driver's race. The 335xi (cobb stage 1) generally sees a 13 flat in the 1/4 give or take a tenth. M235i is a 12.9 car.
The e92 feels good but after driving the M235i for a month, it made me realize how heavy and lethargic it was in turns (bigger, awd). The power band is so much more predictable and fun in the 2. Many agree that the 2 just begs you to drive it hard and the revs will go wherever you want them to at any moment. Mine is the 8speed auto and is the closest to a dual clutch out of the many cars I've been in when it's in Sport + and in S mode. It kills me my vette is a dinosaur in comparison in terms of shifts.
I'd be very upset if you told me I had to take my old car back.
To put it in even better terms: My gf told me to not buy this car. A few days later I bought it unbeknownst to her, brought it home where she was not happy to see it, let her take it for a spin, and she giggled saying "I get why you wanted this" and I never heard a complaint since.