I own both of these games. Here is the deal even though Deadpool is themed around Deadpool they did the game because of the movie being a hit. The game has NOTHING to do with the movie, nor even a cartoon created by Marvel. Its not the Deadpool from the comics its a very PG version which is not honestly Deadpool. This game could have just been a made up Superhero game.
So don't buy it because of the theme, you buy it because its a super awesome pinball game. Deadpool might be one of Sterns best games ever.
Dialed In is an original themed game. Dialed In obviously has a lot more bells and whistles, awesome CGI FX on the screen, lots of cool happenings.
Both are great games. The point I was making about Deadpool not really being the super foul mouthed superhero... is that either pinball or kind of original themes. Jurassic Park Pinball is the same thing its kind of an original story inside the World of Dino's. So in a way both are original themes not based on any movie.
If you go for a Deadpool I would advice grabbing the PRO because its cheaper and its incredible. Dialed In is another incredible game but more expensive.
You can't go wrong either way.