I've had AS Pro since last June and SW pro for about a month. These are 2 totally different machines. Not a really fair comparison at the moment since SW has really polished code and AS has very basic code (outlane drain callouts aren't even coded).
AS is what you play when you want to have low stress fun playing pinball. Zero stress, just fun. The game is nice to look at, goals are easy to understand, music is gets you moving, ball launching into the toybox, that beautiful girl in the elevator! Just plain, simple fun. The worst part about it for me is the 2 outer orbit shots are impossible for me to hit. The left ramp is pretty tight but rewarding. Thankfully, you can have fun with the game without relying on those shots. Visitors and my wife absolutely love this game.
Playing SW is much more involved. There is strategy and thinking that isn't too complicated like other game strategy (i.e. start this, get that ready then, hit his shot, then start MB, etc). The strategy is fairly easy to pick up, fun to try and learn but keeps you coming back because you know you could have executed it better (why did I start that mode without the multiplier on that shot???)! Then there is the light show, all I can say is wow. Lighting with perfect integration with the mode you are in and the SW theme. Every shot is like butter. Very makeable and backhandable.
Since you are a SW fan, I'm not even sure why you are asking this question. What you should be asking is SW pro or SW prem.