I'm sorry, this is utter tripe!
The capture quality is of utmost importance (note,
quality - meaning
accuracy,
fidelity - capturing all of the frequency range and all of the dynamic range of the source sound -
without distortion!!)
Then, reproduction of the recording is also of utmost importance.
With music, generally it's engineered (yes, that is the correct word - a good deal of maths involved...

) so that it sounds good on a wide range of "reproduction devices" - Hi-Fis, portable music players (your walkmans, your iPods etc. etc.)
Back in the 60s, that gritty, fuzzy ("LoFi") vibe came from the need to match the frequency content of the music with what was best transmitted via the medium of radio waves and then reproduced by a crappy speaker...
Similarly, recent pop music has had all the dynamic range squished out of it so that it sounds "good" on iPod headphones (or similar), well known for being muddy at best. This audio compression also helps with data compression for internet broadcast, as a further example.
Listen to a recording of an orchestra, and then actually go and listen to one in person - the difference is astounding! There are some things that "audio range" recordings cannot capture, unless you can reproduce the exact same conditions when you play it back (i.e. speaker location
viz. recording mic. location, volume and dynamics - big, expensive speakers, in other words.) - but
extra-sonic sounds are ignored, despite the fact that we can perceive them through other means than our ears...
And electric guitars have generally awful sound quality, lots of distortion - but that's what's so appealing about them
Now, to address the idiots who may think we're simply defending GT for no other reason than blind defiance: the "Sound in GT5" thread has seen the discussion go around in circles many times, and the general feeling is that the recordings that PD use in-game are lacking in clarity and fidelity over the entire rev-range, and there are general mixing issues - not to mention some apparently dubious use of synth. This, however, says nothing certain about the raw recordings they have.
The audio engine is really impressive (in my opinion) and so long as we keep getting sounds like the 370Z, the Tuned Clio, the Autech GTR etc. etc. (all of which are from old builds), then there shouldn't be any reason to worry.
The main problem PD will have (and indeed, it is the eternal problem for sound in any field) is how to make sure the audio engine can reproduce sounds to a high basic level
on all possible devices.