Because I played 20 games and every time the enemy team just has two tac cruisers tank all damage.
Sure you can try to target the tac cruisers, but you just get torn apart by the enemy team and the battle becomes a slog to win. Have two tac cruisers on your team? Sure, if you want to run the clock out and have the match end 40 to 45. At least you won, technically.
I don't believe this is the developer's intent for how they expect every game to go, especially if they expect their game to have a competitive following.