"It was a lot of fun," Fowler said. "I played well early on in the final round and then I was comfortable over the last few holes. Overall, I enjoyed the whole week.
"It feels great to have the first win. I played well all week, although I did have to hang in on Friday and post a score. But on Thursday, Saturday and Sunday, I had good control of my ball, I drove well and I made some putts."
McIlroy finished with a 64. South Korea's Kim Meen-whee (71) was third at 10 under, and countryman Y.E. Yang (75) followed at 5 under.