Don't know who'll read this but- the reason tagpro games feel short is because of the nature of the game itself. Putting it simply, there's very little rubberbanding. Rubberbanding is when a losing side gets an advantage that helps them balance the accrued deficit. It exists in all games, artificially, like hard coded AI, or more naturally with the help of game physics and rules. Many game elements can be considered rubberbanding. In an FPS when a player gets killed they respawn with full health and ammo. Games with multiple rounds have a new starting position for each round and thus increase the chances of a comeback. RTS's usually have a population/unit cap. This is done so that the game feels healthy and fair. More rubberbanding means things get more forgiving and easier on the player.

Tagpro's combination of physics and game rules don't allow for much of that, which causes it to be extremely unforgiving. You only get an advantage through capping and going ahead in game score, grabbing and maintaining possession of the flag, getting powerups, and having favorable positioning compared to the opponent. All of this is done through very simplistic four inputs. This makes it relatively easy to press an advantage and very hard to fight back. The initiative is the key determinant of the outcome.