For me when I test drove the 2 it was about how the car felt, how it reacted to the accelerator etc, maybe some of that was down to the 1.8's multi link rear suspension.... I don't know.
depends on so many things
- were both manual? or DSG
- if DSG were both in sport mode
- millage? mine is a bit faster now after 5k when it was only 1k
- petrol used
- air temp
- warm vs cold engine
- engine sound is better on 1.8 and that makes it feel much faster than it is (placebo effect