Quoted from ejg10532626:I counted 3 significant differences. Likely there are more.
A. The ramp system, with the short right ramp cross over.
B. The big left ramp shot tunnels under the right side of the playfield, or appears to.
C. Ecto goggles, whatever that is, missing from pro.
The Pro right ramp is a "WWE" two way ramp. Right ramp shot goes around and comes down the left ramp. Not a fan of that at all.