These suggestion are based on mainly on McCarty's time at Hamilton and the few times i've seem him play at Wigan.
Attack: could come up to 74 usually when the team are on the attack he usually manages to find himself space in or arround the box. Personally I'd rate him a 75-76 based on his time in Scotland above the likes of Fletcher, but he hasn't justified a value like that in the EPL yet.
Defence: 64 does drop back to help out defensively if required, or covers for watson when he goes forward.
Top Speed: 79-80 Looks faster than a 78 and no slower than Ben Watson, and has been played on the wing at times for this reason.
Agility: 82 he's not less agile than the likes of Bullard and Fletcher, about level with O'Hara seems right.
Dribble Speed: 79-80 doesn't loose much speed on the ball.
Short Pass Speed: 81 Always generates decent pace behind his passes.
Long Pass Accuracy: 77 His alround passing game is great for his age not just his short passes and a 73 isn't really a fair value, his long range passes usually find their man. Sitting level with Lennon and Sidwell seem fair.
Long Pass Speed: 83 Othertimes they are slightly over hit, such as his recent attempt to find Melchiot against chelsea.
Aggression: 79-81 Plays further up the field than a 76 would allow. He usually is played just behind the striker(s) from what I remember, also bombing forward when able. Similar to Stephen Ireland in this aspect.
Team Work: 82 Has always been a team player and will look to pick out a pass to a teammate over trying a to take on players himself and usually forms a good understanding with the players arround him, such as McArthur at Hamilton.
I'm not sure if these suggestions still represent his style of play, due to still settling in at a new team and whatnot, so any feedback would be great.