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

Execution · Practiced Mastery
A modern Gears entry spanning campaign, Horde, Escape, and ranked versus.

Execution · Competitive PvP
Tests stylish movement-shooter mechanics against human teams in objective modes.
Gears 5 leans Execution (Practiced Mastery); S4 League 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.
Gears 5
Movement tech and shotgun duels remain the core test
S4 League
Wall-running movement and aim duels decide exchanges
S4 League leans a little harder on reads, though the gap is small.
Gears 5
Ranked versus rewards out-thinking human opponents
S4 League
Human opponents in Touchdown demand constant prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gears 5
Escape and Horde inject some run variance
S4 League
Some weapon spread and mode chaos
Gears 5 leans a little harder on optimization, though the gap is small.
Gears 5
Character ultimates and map control are learnable
S4 League
Loadout choices and map knowledge matter 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.