Halftime at my small experiment:

At the moment (after 2nd week):
Both play MC
PM: average rating: 8,9; 7 goals, 10 assists (5 CK)
CK: average rating: 8,1, 1 goal, 6 assists (4 CK)

The rating of both at the three cupgames were only 7, no goals. Only PM had one assist.