Crysis 3 isn't as good as Crysis 2 or Crysis, but it isn't as bad as the other crap currently being released.
Crysis 3 feels like Downloadable Content with WEEDS. The major addition is the bow and the ability to use alien weapons. The alien weapons are so powerful that they make you wonder how the ceph are getting their asses kicked by the humans. The bow is so overbalanced that the C.E.L.L soldiers don't stand a chance against the combination of your cloak and your ability to shoot them while invisible.
Crysis 3 has a good looking Singleplayer experience and a more fleshed out, "finished" multiplayer. Crysis 2's MP felt tacked on while Crysis 3 feels like it was designed from the ground up with MP in mind. The maps are large and gorgeous and the game modes are pretty diverse. My favorite mode is CELL vs. REBELS because players don't have nanosuits and are easier to kill. Probably a better experience than CoD: BO2.
If you are a Crysis fan, you'll appreciate this title for the continuation of the story (which has only gotten more ridiculous across the sequels), but Crysis 3 ultimately comes up short.