It really isn't, many people in the Tf2 thread said the core mechanics of gunplay is black ops 3ish. The feel of the game is so cod man, why deny it? Outside of the titans which are the best part, the game is call of duty. And the original games ttk was a notch longer, it felt like it's own game and not a total cod knockoff, I'm sorry that is how I feel because I spent 60 bucks on it, you think I want to feel that way? Not at all.
For those who enjoy it that's great. I enjoyed the original, had couple hundred hours. This is not the same core build of the original, it just isn't.
And yea I agree they're very different games. I didn't create the thread, I'm just chipping in since the thread brought up Battlefield 1 which to me is a superb shooter, one of the best in last 10 years maybe.
I wish I could say titanfall 2 was amazing, but the wall hacks, the ttk, just terrible.