head to head
Guns of Icarus Online asks more than FIFA Soccer 11, and the gap is optimization.

Execution · Competitive PvP
Football sim testing stick execution and reading a human opponent's tactical habits.

Reads · Mind & Math
A team airship battler testing crew coordination and outmaneuvering human captains.
FIFA Soccer 11 leans Execution (Competitive PvP); Guns of Icarus Online leans Reads (Mind & Math).
FIFA Soccer 11 leans a little harder on execution, though the gap is small.
FIFA Soccer 11
Pass timing, dribbling and finishing demand stick skill
Guns of Icarus Online
Gunnery arcs and repair juggling need competent hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 11
Human opponents' defensive habits and attacking patterns must be modelled
Guns of Icarus Online
Human captains feint, reposition and counter your ship tactics
FIFA Soccer 11 leans a little harder on variance, though the gap is small.
FIFA Soccer 11
Deflections and keeper behaviour add bounded chaos
Guns of Icarus Online
Cloud cover hides ships briefly, little else random
Guns of Icarus Online leans clearly harder on optimization.
FIFA Soccer 11
Formations, tactics and squad knowledge shape matches
Guns of Icarus Online
Loadouts, role coordination and positioning are deeply plannable
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.