tf.tv full of so many god FPS players that you don't realize how biased you are about a game that is so out-dated.
Quick pluses of OW:
1. Quick to play, jump into a game, with a completely standardized format of 6v6. No finding a server, clicking a quickplay icon that makes you wait a few minutes to find a server that may or may not have a legitimate game.
2. An extremely polished HUD/UI/interface. It took me all of 10 seconds to change my key bindings for Zenyatta when I realized I wanted to swap jump/orb of harmony. It's really well designed in so many ways.
3. There's many advanced movement mechanics that are easier to understand than sticky/rocket-jumping. Rather than just those 2. Tracer blink/recall, widow grapple, junkrat jumping, reaper teleport
4. Teamwork still required even in pub play. If your teammates solo feed into a point you will not suceed. When randos team up and work together, strong team play wins out.
Of course all of you are Gods at the game, you've spent years playing a movement oriented FPS that OW has been admittedly modeled on. Are you saying you don't enjoy top scoring games on a regular basis? Keep in mind you're playing people who have just started playing the OW beta and probably don't play FPS often.
Go watch the Gamespot part 2 (return of 90s shooter) to see that 1. OW is based around movement skills 2. the OW team understands why TF2 competitive was mildy popular but that many hated normie TF2 for things like insta-spawn 2fort meat-grinders.
Many casual gamers are getting into OW because they see the fun that can be had in team-based FPS. Some of these gamers had been turned off from TF2 for various reasons. The default TF2 experience is shit. The default OW experience is extremely well polished and makes you want to play as a team, with friends or solo.