I think CP will have 2-4 monstrous fantasy weeks and the other 12-14 will be short of expectations for a 4th rounder. The decision to start or bench for fantasy owners will be grueling, comparable to Mike Wallace last year.
Like I said before, boom or bust. There are going to be a LOT of weeks like the for CP owners. Get used to it.
He was pretty consistent once he was featured more in the last five games as a rookie.
When I looked at a 1/2 point PPR league, when his usage changed and he was featured more in his last five games as a rookie last season, he scored 9.6, 25.2, 13.5, 13.7 and 21.5, for a 16.7 PPG average. Does that look like a boom or bust distribution? That was top 10 in that format, for that time frame, higher than Antonio Brown, Brandon Marshall, Andre Johnson, Vincent Jackson, etc. Than he was top 5 week 1 in 2014 with 22.3 points. Even in week 2, he was within a point of WRs like Roddy White, Vincent Jackson, Larry Fitzgerald, Victor Cruz and Keenan Allen.
What are expectations for a 4th rounder? Did Patterson fall short of them, in the last five games of 2013 and first game of 2014, in 75% or more of those starts (the ratio you are predicting)? Was starting him in that stretch "gruelling", when he was the only skill player in the league to score at least 1 TD in six straight games?
Maybe he will be inconsistent in the future and disappoint the expectations of a comparable fourth round WR? But it would have been just as fair and accurate to say in the previous six games, get used to consistent production. It is at least as likely that Peterson being out and Cassel having 4 INTs contributed to his muted scoring, and week 2 was an aberration on that basis (NOT the best basis on which to claim I told you he is going to be inconsistent).
Of course there is some risk in taking a young, high upside player over some of the older, more established options. But there is also risk in not taking him, if he fulfills his potential. If so, you may be getting used to him putting up production better than expectations based on comparable round 4 WRs, more consistently than a 25% or worse ratio (range of 2/16-4/16 games), as you have speculated.