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
The pioneering large-scale WWII shooter built on combined-arms map chaos.

Execution · Competitive PvP
Reversal timing and pacing against an opponent baiting your counters.
Battlefield 1942 leans Execution (Competitive PvP); WWE 2K15 leans Execution (Competitive PvP).
Battlefield 1942 leans a little harder on execution, though the gap is small.
Battlefield 1942
Aim, vehicle handling, and leading shots matter.
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.
Battlefield 1942
Human teams adapt flanks and vehicle pushes.
WWE 2K15
Human opponents bait reversals and vary move timing
Battlefield 1942 leans a little harder on variance, though the gap is small.
Battlefield 1942
64-player chaos and spawns add noise.
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.
Battlefield 1942
Map control and vehicle timing learnable.
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.