Quantifying the Coopertition bridge

[Grim Tuesday]

We all know that one ball on the top row is worth 3 balls on the bottom row, and that one robot on a bridge is worth 3 balls in the top row. There are various ways to measure each element of the game in relation to another, and they are very useful: 2 balls in the top is worth 3 in the middle. However, the coopertition bridge defies this. It has no point value in the game. So, how should we quantify its value in relation to the rest of the game, other than 'it's pretty important'.