Two vastly different games, really apples and oranges, IMO.
T2 is all about flow and speed, not depth. JP is about modes, a bit more stop and go, with a great wizard mode.
I have a JP and love it. I would also like to add a T2 to my lineup at some point, as I feel they complement each other very well.
T2 was one of the first pins I remember playing in college when it was new. I think it's a simple and fun game.
Looking at the pins you currently list in your lineup, I think T2 would provide a great "change of pace" game (incidentally, The Getaway is another "flow" game I'd consider adding alongside JP).
For a single pin lineup, JP all the way. If you're considering adding the T2 alongside TZ and Williams IJ, then I think that's a nice pairing.