[DonRotolo]

The short answer is power. More watts to the wheels means better performance.

Kind of like using a V-12 in a race car when a 4-cylinder certainly would get the car to move. Not fatal, but it *may* be a disadvantage, depending on your strategy. (e.g., if your strategy doesn't include moving around a lot, then it might be OK).

If you are using a CIM on your shooter, you may want to consider using 2 other, smaller, motors instead, like two Fischer-Price connected by gears to a single shaft. For example.