I read that bit yesterday and found myself agreeing with just about everything the guy said. He's got it spot-on IMHO.
The comparisons to the TT and Celica are fair as they're both 2+2 coupes and the strict 2-seater 370Z dwarfs them: Note he's talking about size there and nothing else. The roofline doesn't have a lot of clearance. There's a fair amount of road noise, which is why everyone wants to fit aftermarket exhausts so you hear the engine rather than the tyre roar. Assuming that the gear ratios aren't remarkably different from the 350, then you do get caught between gears at the top of 2nd, I had that issue many a time with mine. It is thirsty, and there are better cars (I use that term loosely as it depends on what you want from a vehicle) if you're prepared to take a one or two year old model instead of brand new.
Does any of that make the 370Z a bad car? No, of course not, but the guy can only compare with he's used to and for the most part it's a very fair comparison.