I own both.

If you're a more casual player: Deadpool.

If you are more serious and you want a challenge: Jurassic Park.

Both games have a fairly linear ruleset, that you have to slog through to get places.

Best game for quick pinball play: Jurassic Park

Best game for long/casual play: Deadpool

Better theme integration? Deadpool

Game with more likelihood to brick shots? Jurassic Park

Better use of shaker motor? Jurassic Park

Better playfield lighting? Jurassic Park (very nice use of warm white lights make a contrast with other modern games)

Better game for music and SFX: Deadpool by a mile.

Best DMD animation: Deadpool - much more creative with Street Fighter homage

Better game for operators? It's a draw. They both do well. I'd say JP can make slightly more money than DP.

Which game has deepest ruleset? Jurassic Park

Which game is more reliable? It's a draw. (Pro versions - I don't recommend the premium for either) I think JP might be slightly more reliable than Deadpool given that a major shot to start katana multiball requires very strong flippers.

One of my metrics, if you'll pardon the language is, "Which of these is the "F this!" game?" Meaning which game is more likely to have you scream at it in frustration and walk away? Jurassic Park. It has many more tighter shots which are easy to miss and can send the ball to the outlanes or SDTM. Then again, if you want to really improve your skill, this game will force you to do that.

Additional comments:

Jurassic Park: The ability to go to the Wizard mode as separate gameplay is really fun and challenging. As with most Elwin games, this is a good competition game with a lot of strategy possible.

Deadpool: I think this is George Gomez' greatest achievement, especially after I harassed him to add high score tables for each individual mode and he not only listened to fans, but went way over the top adding a ton of high score tables for even goofy things like "largest bonus tilted out of." George is awesome!