Perhaps? You think he'll win both masters but you're aren't sure of him making the final of the Open?
I don't think he'll win in both Montreal and Cincy. Maybe one win and a final/semi. Murray has owned Montreal/Toronto for the past two years and Roger has won Cincy twice on the trot as well so I don't know why you're so sure he'll win both of them.
I don't think losing the streak will affect him much. I think what's more important is that he'll face a bit more competition in the rest of the season. On clay his only big opposition was Nadal. On slow hardcourts he is the best. For the rest of the season though there will be a few more danger players for him. Murray, Del Potro and Federer all tend to do well in the US Open series.
I mistakenly grouped the U.S. hardcourt season with the season following the U.S. Open (Beijing, Shanghai, Paris, etc.) Nevertheless, although I said "sweep", I don't really MEAN sweep. Just careless wording on my part
I think he'll do very well and probably win either Canada or Cincinnati and make the finals in the other (or semis, depending on which half of the draw Federer is on).
As for the U.S. Open, I'm lowering my expectations again. Djoker literally had a tremendous opportunity to win RG this year and couldn't find the ability to match his semi-final opponent. It was almost TOO easy; playing well below his form he managed to somehow stumble upon 2 set points in the 1st set but lost anyway. Maybe Djokovic erred in concentration but he certainly didn't rise to the occasion until the 3rd and 4th set which was ultimately too late. He cannot afford to do that against Federer and Nadal and maybe did that because of how well he was doing. It's probably a good lesson to learn for him.
Psychologically, I think he'll be fine. I don't think he felt too pressured during the streak and I doubt he'll feel any additional pressure after.
But who knows. These things are so hard to predict and things can change in an instant. Still, it's fun to guess