Ah apologies. Shouldn't have responded in the cinema ... you're right, it does say this. And yeah, those fake barriers are disappointing, I agree. Also while I strongly expect unrealistic crashing from GT, I do think that having TCS up that high should result in the car reacting a little more like he experiences after a crash. I drove without TCS a lot in Prologue, and cars would spin out so much sometimes some people complained that wasn't realistic either. At least now that the cars can go up in the air, they can evolve to something a little more realistic in that respect. Look forward to trying it for myself.
Of course, in the actual article he's not talking about the driving model at all when commenting on the physics, but rather the GT Pinball that's played when you hit a barrier or another car and the fact that it seems to be in place in GT5 as in previous iterations.
Oh, and (from page 1 of the linked article):
Hope this helps.