Eh......starting in 4-6th place and making your way to first isn't a challenge. You have got it all backwards mate. From 16th to 1st IS the challenge. I couldn't care less where I start as long as I finish in the top 3.
I think you misunderstand, he saying a real challenge would be A.I. that are good enough to make a 4 or 5 place start a challenge to hang onto and improve of the course of a race. He is saying if the A.I. was not so piss poor PD would not have to have 16 to 1st races. But it is a Prologue so maybe the A.I. will see a drastic improvement before the final game, but going off the past games that's highly unlikely.