Chocks,
Aside from professional recommendations, which even in integrated land must surely be in the vast minority of successful employment scenarios; the only way I can accept your argument is if the entry criteria for the integrated school were such that the majority of applicants would fail entrance. The CTC chaps I had the pleasure of mixing with on the Bristol course seemed to me to be, on average, of a higher calibre than your average trainee (only an impression mind).
Scroggs answered a question of mine about GAPAN in the other forum. Aside from GAPAN, I believe that the selection test used by CTC, for example, is the Advanced COMPASS test (is that correct?). The test is available to anybody willing to pay the fee. Maybe it is upto the modular individual to proove they are more than the sum of their ratings as it would be for the self-sponsored integrated graduate?