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
Accessible large-scale shooting with light prediction against human players.

Execution · Competitive PvP
Reversal timing and pacing against an opponent baiting your counters.
Star Wars Battlefront leans Execution (Competitive PvP); WWE 2K15 leans Execution (Competitive PvP).
Star Wars Battlefront leans a little harder on execution, though the gap is small.
Star Wars Battlefront
Aimbot dominates blaster fights despite generous hitboxes
WWE 2K15
Reversal timing windows decide most exchanges
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Star Wars Battlefront
Human lobbies add modest positional prediction
WWE 2K15
Human opponents bait reversals and vary move timing
Star Wars Battlefront leans a little harder on variance, though the gap is small.
Star Wars Battlefront
Power-up pickups and spawn flow inject chaos
WWE 2K15
Chain-wrestling rock-paper-scissors minigames add 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
Objective timing and pickup control reward learned routes
WWE 2K15
Move sets, stamina and match pacing are learnable systems
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.