An elated Wawrinka, who had lost to Roger-Vasselin last year in Basel, said after the match that he hoped to improve further.
"Obviously, this is special, to win my fifth title. I had a good 2013 and had an amazing week here. I will practice hard and do my best to win more matches in 2014.
"I was expecting a tough match. I had lost to him last year. So I had to focus on my game. It was a special match. I think I served well when I needed and was aggressive.
"Every win is special. In 2011, I was No.3 seed, but I came here this time as No.8 and I guess there was some pressure on me.
"My best start for the year and I am playing at my best. But it is just the first week and I have to keep going. I have to keep pushing myself," said Wawrinka.
Roger-Vasselin hoped that he would win a tour title soon, after missing out twice in his career.
"It was tough losing the final and hopefully, I will win a tournament soon. I tried everything tonight, but Stan was just too good and didn't give me any chance.
"After this final, I can say I had an amazing week," said Roger-Vasselin who will fly to Sydney Sunday night for his next tournament.
