head to head
Call of Duty: Black Ops asks more than FIFA Soccer 07, and the gap is execution.

Execution · Competitive PvP
Cold War-era shooter pairing twitch multiplayer with the cult Zombies mode.

Execution · Competitive PvP
Football stick execution and opponent reading, salted with bounce-of-the-ball luck.
Call of Duty: Black Ops leans Execution (Competitive PvP); FIFA Soccer 07 leans Execution (Competitive PvP).
Call of Duty: Black Ops leans clearly harder on execution.
Call of Duty: Black Ops
Gunfights hinge on aim and reaction speed
FIFA Soccer 07
Stick skills and timing on passes and finishing
Call of Duty: Black Ops leans a little harder on reads, though the gap is small.
Call of Duty: Black Ops
Reading human opponents' positioning and timing
FIFA Soccer 07
Versus humans, baiting tackles and disguising attacks matters
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Black Ops
Spawns, care packages, zombies RNG
FIFA Soccer 07
Deflections and keeper randomness swing single matches
Call of Duty: Black Ops leans a little harder on optimization, though the gap is small.
Call of Duty: Black Ops
Class builds, map control, zombies routing
FIFA Soccer 07
Formations and exploit patterns are learnable meta
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.