As good as Matsuyama is playing, I still question how good he can be when he is so awful with his putting and short game. His putting is flat out bad, a lot of his misses go nowhere near the hole, his stroke is so mechanic and his green reading isn't good. He also hits a lot of really poor shots around the greens. No one goes 12 months of the year hitting every fairway and hitting every approach shot to within 20 feet, unless he is going to become the best ball striker maybe ever. Eventually, you have to make some putts. I still prefer someone like Thomas to Matsuyama because he's a better putter. Matsuyama is Westwood-bad with his putting and short game.
He might be the best ball-striker in the game though. I think he's beginning to challenge Stenson for that, but Stenson level ball-striking won't be good enough to sustain this type of play. It'll either need to be a notch higher or he begins rounding out his game. None of the top players are as bad in one aspect of the game as Matsuyama is with putting. People made fun of Rory's putting a year ago, but Rory is good compared to Hideki.