Ricochet, Delt and Rum-Z summed it up quite nicely. Like William above owned both and only Indy survived. I actually had 2 Simpsons and the second time around it took a week to feel the same way. I didn't like the call outs with bart yelling at me to hit everything while homer d'ohed through the whole game. The long ball times stopped us from competing on it and I was the only one playing it when I knew I had 30 mins to play a game. The game does rock when you're stacking everything but when I felt the same way a week later I traded it away.
Indy on the other hand is a classic theme for my family that is well integrated into the game. Deep enough to keep you coming back for more but yet attainable. I only hit reverse flippers twice on the simspons. I enjoy the video modes on Indy and the whole game feels complete. When family and friends came over they found TSPP too confusing but everyone plays Indy.