Bendtner impressed on his first Gunners appearance for two years, setting up the opening goal and scoring a penalty in the shootout.
And Wenger believes the Dane could be a key asset as long as he remains fit and motivated.
|11/1||Arsenal are 11/1 with William Hill to beat Swansea 2-0
"I believe for Nicklas Bendtner the most important thing is to stay fit physically and after that he has the talent. In England you know him well.
"For him it's important that he's consistently present and he works hard physically because he has the top qualities."
Bendtner missed the chance to score himself, but Wenger remained upbeat about the the striker's performance and the reception he received from the Emirates Stadium crowd.
"He took too much time," the Gunners boss added.
"What happened to him is what happens to many strikers when they have too much time to score. Wait and wait and then wait for too long but overall I think his game was positive.
"The fans were absolutely fantastic. Even when West Brom came back to 1-1 they encouraged us and they encouraged Nicklas.
"Overall I think he had a good game for a guy who has not played for such a long time on his own up front. He did very well."