I've had a few of each (inc both 2wd and 4wd cossies)

The 4wd system/feel is completely different on the gti-r compared to the cossie.

The gti-r can feel very planted and even lifting off on sweeping 100mph bends doesn't unsettle it too much.

A 4wd cossie will still be a 'different' drive for you. There's one particular high speed sweeper I used to get a feel for my cars and let off at a ton in the gti-r and it feels fine, let off in the cossie and it can feel scary and a bit unsettled.

I'm pretty sure the cosworth is 60/40 (60 rear)?? split. The pulsar is at least 50/50 IIRC (may even be front biased?).. sure someone will correct me

But anyway they feel quite different, a lot more so than pulsar vs Subaru, pulsar vs evo etc.

The cosworth seems to go a lot better over 100mph though, the gti-r seems to run out of acceleration at about 100mph.

My advice.. get RWD cosworth over 4wd