Well no, the arm wand is different. As you can see from the photo there is a big difference, the right hand one is the Ltd version, which certainly comes across in the sound. (Hope this image has uploaded).
The one on the right in your photo looks like the arm on the Amadeus MK II (like mine, except the ball is white), which may be the only difference between Amadeus and Amadeus MK II (not certain).
Not sure what sonic differences there would be.
I half joke to my friends that WTL changed from the full golf ball to the ball with the silver cap because guys were bringing Amadeus tables home and wives were like, "You paid how much for a TT with a golf ball in it?!?" The cap hides the ball, and I believe that's why they made the change, because the ball made the table look kinda "science experiment." (My wife has no idea there's a golf ball in my ~ $3,000 table