I've spent a couple of days in the GT & today got back into my Brera. Yes, they are quite different
The GT has short gearing so pulls like a train and feels quick, needing urgent upshifts whereas the Brera has long gearing, is more refined yet still pulls like an excocet on steriods yet doesn't feel as quick.
It's a licence loser as 130 feels like 70 wheras 70 in the GT feels like a ton in the Brera.
GT engine sounds better but overall, the Brera sounds the best (mini - Ferrari type yowl).
As for ride & handling and in standard form, the Brera absolutley trounces the GT in all aspects other than initial turn in front end bite although even this can be addressed by turning the VDC/ASR off.
Across B roads, the GT bounces around & kisses the tarmac - the Brera is stable with consistently good ground clearance. The GT doesn't do speed humps. The Brera just goes over them. The GT is harsh, course, un-composed & unrefined on anything other than perfect tarmac
The older standard chasis is comprehensivley outclassed by the Brera underpinnings.
In terms of traction, Q4 versus Q2, again, the Brera just gets on with it. Full power in the wet, no drama, no front wheel drive crazyness just pull.
Build quality / overall quality. Again, a million miles apart in favour of the newer offering.
Looks, too, go to the Brera (we both feel the same on that).
The GT is a practical family car. Seats five, good boot and decent oddment space inside. The Brera isn't
Which do / would I grab on a daily basis? You can tell from the above it's the Brera. The GT, her car aside, if Clare uses the Brera, I have to pry her out of it.
Whilst unbiased, personal preference comes into the above and in terms of demographics, I'm in my early 40's & Clare's in her late 30's