You’re not just getting the base versions, either. Battlefield 1 Revolution comes with the Premium pass, which includes all of the game’s DLC as well as special weapons and items. Meanwhile, Titanfall 2’s Deluxe Edition comes with a whole bunch of cosmetic items and all the titans and pilots already unlocked.
If you’ve yet to play either game, the Battlefield 1 & Titanfall 2 Ultimate Bundle is probably your best chance. Titanfall 2 is my personal favourite of the pair, but they’re both great online or offline. A new Battlefield game is set to be properly revealed soon and Titanfall 3 is in the works from Respawn.