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
Large-battle aim and positioning with light prediction against human players.

Execution · Competitive PvP
Reversal-timing wrestling that becomes a prediction game against humans.
Star Wars: Battlefront II leans Execution (Competitive PvP); WWE SmackDown! Shut Your Mouth leans Execution (Competitive PvP).
Star Wars: Battlefront II leans a little harder on execution, though the gap is small.
Star Wars: Battlefront II
Aimbot dominates infantry fights and starfighter dogfights
WWE SmackDown! Shut Your Mouth
Grapple timing and reversals reward quick hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Star Wars: Battlefront II
Human opponents in multiplayer create modest prediction play
WWE SmackDown! Shut Your Mouth
Versus friends, reversal baiting becomes a prediction game
Star Wars: Battlefront II leans a little harder on variance, though the gap is small.
Star Wars: Battlefront II
Spawns, vehicle availability and hero pickups add chaos
WWE SmackDown! Shut Your Mouth
Mild AI and momentum randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Star Wars: Battlefront II
Class choice and map control reward learned plans
WWE SmackDown! Shut Your Mouth
Move-set knowledge and momentum management are learnable
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.