head to head
Call of Duty: Black Ops asks more than FIFA: Road to World Cup 98, and the gap is execution.

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

Execution · Competitive PvP
Fast arcade football execution with couch-multiplayer mind games.
Call of Duty: Black Ops leans Execution (Competitive PvP); FIFA: Road to World Cup 98 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: Road to World Cup 98
Arcade-paced dribbling and shot timing decide matches
Call of Duty: Black Ops leans clearly harder on reads.
Call of Duty: Black Ops
Reading human opponents' positioning and timing
FIFA: Road to World Cup 98
Couch opponents can be baited; AI cannot
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: Road to World Cup 98
Bouncy ball physics inject classic FIFA luck
Call of Duty: Black Ops leans clearly harder on optimization.
Call of Duty: Black Ops
Class builds, map control, zombies routing
FIFA: Road to World Cup 98
Simple era tactics and exploit goals are quickly mapped
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.