Well, because crocodiles are available from the start... which allows you to gain good momentum in the first week, and you can break through many tough defenses that Taz wouldn't be able to handle.
And in the second week, upgraded crocodiles are a very good asset in battles.
Taz's advantage starts to become noticeable somewhere in the middle to end of the third week, and by that time, not all games will have reached that point.
And it's not mentioned what difficulty level it is: 160% or 200%.
P.S. maybe create a team for Vistan as well? He seems to have fans besides Sam.