Well the VF characters are tougher to use than the DOA characters. Their command are harder to input. Sarah is probably the easiest out of the VF group but you can't master her in a day either. Some DOA hard to master too, like Leifang for example or Ayane.
Yeah that understandable though VF characters just seem way harder imo. Jacky is a recommended beginner type in VF. His flash kick is really easy. It just really I just get annoyed when I do certain moves I get beat out of it. 4H+K, 8P, etc. I think the problem is I dont know what best to use with him.
I wouldn't say Jacky is harder to pick up. I mean, execution-wise he is considered brain dead in VF5FS. Maybe you're not used to him, or you expect to play exactly like Jann. I dunno. If you really like to play him, stick with him. I would help you but I'm no Jacky player. I only messed with him in VF5FS only to learn how to deal with him.
You could probably start off with something like this, he has a bit more potential then that. Such as 4P2P, 2H+KKKK, 1H+K, 2P+K, 3KP and 44P for BT purposes.
I like to use Jacky, but i get blown up everytime with him. Im not sure if it worth it. Im use to Jann Lee, but going to Jacky it feels different. I guess I get a bit discouraged with him because I lose to stuff with him I wouldn't with anyone else.
2H+KKK I have a problem with. It is a move that can be countered easily and then on hit takes him awhile to recover. Looks like it can be punished.