head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Competitive PvP
Cover-based shotgun duels testing movement execution and positional prediction in multiplayer.

Execution · Pure Mechanics
Famously unforgiving ball control tested against human prediction in fast matches.
Gears of War: Ultimate Edition leans Execution (Competitive PvP); Kick Off 2 leans Execution (Pure Mechanics).
Kick Off 2 leans a little harder on execution, though the gap is small.
Gears of War: Ultimate Edition
Wallbounce movement and gnasher duels demand real hands
Kick Off 2
The ball never sticks - constant trapping demands famously precise control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gears of War: Ultimate Edition
Multiplayer is constant positional mind-games around cover
Kick Off 2
Human matches reward predicting passes and tackle timing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gears of War: Ultimate Edition
Weapon spawns timed and known; spread mildly random
Kick Off 2
Pitch types and deflections add mild chaos
Gears of War: Ultimate Edition leans a little harder on optimization, though the gap is small.
Gears of War: Ultimate Edition
Map control and spawn timing knowledge structure matches
Kick Off 2
Set plays and formation knowledge sit underneath
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.