I played a bit of 3 on PS4 because they gave it me for free.
Hardcore TDM/DM was the only thing I played. Bit odd wall running, but I got used to it swiftly enough. I imagine there is more of that in this one?
I preferred the Battlefield 1 experience myself, but each to their own
So I've just bought Blops 4 for PC. As a nerd with principals I hate giving money to Activision but I had fun with Blops 2.