I think SONY made a huge mistake forcing Kaz and the team to focus on getting GTPSP out first. Yes, there are twice as many PSPs as PS3s on the market, but PS3 really needed the boost. And I expect that GTPSP is going to sell slightly better than Prologue. I might be wrong, but if I was playing GT5 right now and was wanting to play GTPSP (I don't), it would be
much easier than if I had PSP and was waiting on GT5. In fact, I would prefer it.
Just think of what might be left out of GT5 because of the work spent on GTPSP:
- Better damage implementation (possibly).
- More cars and tracks.
- Weather, and day and night progression (possibly).
- Race mod and livery editor (possibly).
- Working reverse lights and wipers - okay, this was a joke.

But think of your favorite thing, and keep in mind that
GTPSP is not a small project! It has 800 cars, and many of us didn't think GT5 would have 700.
Honestly, if GTPSP delayed GT5 more than a couple of months, and it could have delayed it as much as a year or more, I'd find one of SONY's board members and give him the wedgie of his life.