I feel it is a trifle. The main complaint is the lack of a campaign mode, so far as I can see, rather than any issue with driving gameplay itself, etc.
However, that lack would appear to be deliberate, rather than some form of flaw, and GT on PSP is clearly built around short gameplay bursts, no doubt based on how the developers thought a portable audience would play it.
So there does seem to be a gap between the game as designed and the expectations for the game.
This is always a tough area for reviews, IMHO. Do they review only the game as designed, even if they think the core design is flawed, or respond to the design? From what I've seen, as designed, an accepting the lack of campaign as deliberate and appropriate for a handheld experience, GT PSP should be scornig higher.
On the other hand, it may be that the design is flawed, inasmuch as the developers misjudged the audience and even on a portable the average player desires a campaign. In that case the reviews are probably more or less in line with the customer.
Anyway, sorry for wandering, and yes, I agree, it's core design has been somewhat misunderstood or viewed as flawed when arguably its exactly as intended and therefore not flawed simply perhaps not what someone might prefer.
Try to be reasonable... its easier than you think...
