You need more than jokes to be a good stand up. Scary thought isn't it?
Though there is no question great jokes give a big assist to going over well, a comedy talent still has to add so much essence.
Tell me, have you ever seen somebody butcher a great joke? The point that makes is simple, jokes can't stand alone.
There has to be a build, a story, a powerful personality packed with funny consistent attitude that suits the comic delivering those jokes. THEN you have stand up comedy. THEN and only then do you have a potential to become great.