Unless both cars are COMPLETELY factory standard this argument is a bit irrelevant.
What you can say is that the Sapphire is stiffer platform as standard and the 3-door hubs offer a turn-in/roll centre advantage over a 4-door 2wd.
Just as an aside, for whatever reason, when they tested these cars on tracks new in the road tests, the 2wd Sapphires ALWAYS bettered the 3-door track times....only by about a second or so .

Road testers of the time said the 4-door was less twitchy at the limit, more stable under braking and slightly more confidence inspiring. THEIR words NOT mine by the way.
Sapphires ran stiffer springs all round, shocks that were softer in bump but stiffer in rebound and a thicker rear ARB.

Having said that, most of the cars for sale have been modded anyway in the suspension department so mostly the above won't apply