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

Execution · Competitive PvP
Fast arena combat that tests combo execution and counter prediction against human opponents.

Execution · Competitive PvP
Cover-based shotgun duels testing movement execution and positional prediction in multiplayer.
Dragon Ball Z: Budokai Tenkaichi leans Execution (Competitive PvP); Gears of War: Ultimate Edition leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Budokai Tenkaichi
Combo timing, dashes and beam clashes reward fast hands
Gears of War: Ultimate Edition
Wallbounce movement and gnasher duels demand real hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Budokai Tenkaichi
Versus humans, predicting teleport counters and ki tactics matters
Gears of War: Ultimate Edition
Multiplayer is constant positional mind-games around cover
Gears of War: Ultimate Edition leans a little harder on variance, though the gap is small.
Dragon Ball Z: Budokai Tenkaichi
Almost nothing random once movesets are known
Gears of War: Ultimate Edition
Weapon spawns timed and known; spread mildly random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball Z: Budokai Tenkaichi
Character matchups and attribute builds are learnable systems
Gears of War: Ultimate Edition
Map control and spawn timing knowledge structure matches
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.