The point it, as the rate at which they are rising, despite being moderately good are just not large enough to catch up with the exclusives that are already out, mainly the juggernauts, I admit that PS3 has some great exclusives but some 7-8 of the ones that were listed in that list have been out for quite a period of time(Most for more than a year) and yet the sales remain low. Yakuza 3 being a prime example, I have seen it in UK stores for as low as £22, around £13 off it's original price despite being released in the UK sometime this month. Not saying that those exclusives are bad, just the sales are poor. I really have no clue what the PS3 owners play if out of 34M only a small margin buy the exclusives.
The history is written by the Victors.