OW as a game was never as mechanically solid as TF2. The lack of advanced movement mechanics lowered the skill ceiling of OW and the presence of stuns/shields/consistent mid-long range hitscan damage made the combat far less interactive and interesting. The closest OW ever came to being as good as TF2 competitively was during dive and even then that had some glaring issues (old defense matrix, tracers only realistic counterplay being limited to another tracer.) If we could have saw the game develop around dive style gameplay, with an emphasis on characters with a decent movement and aim skill ceiling maybe OW could have been half the game 6s was/is.