Rory's Switch

I was watching Rory play in Abu Dahbi and was wondering if perhaps he has made the wrong move by switching from his Titleist clubs to the competitor. He was out of sorts, and was not hitting the ball like he did before dropping the Titleist line. His driving with the 913 was on track, and now there are obviously some issues. His putting really suffered. Hopefully he can at least go back to his Titleist putter and salvage some good scores. It would be a shame to see him slip from his number one spot. When something is working - why change ????