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
Reversal-timing duels where humans bait each other inside scripted spectacle.

Execution · Competitive PvP
Grapple-timing wrestling where couch matches hinge on outguessing the other player.
WWE SmackDown vs. Raw 2011 leans Execution (Competitive PvP); WWF Attitude leans Execution (Competitive PvP).
WWF Attitude leans a little harder on execution, though the gap is small.
WWE SmackDown vs. Raw 2011
Reversal timing windows reward practiced reactions
WWF Attitude
Grapple timing and combo inputs decide exchanges
WWF Attitude leans a little harder on reads, though the gap is small.
WWE SmackDown vs. Raw 2011
Versus humans, reversal baiting becomes a guessing duel
WWF Attitude
Versus humans, grapple attempts become a guessing duel
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
WWE SmackDown vs. Raw 2011
Momentum swings and AI quirks add mild chaos
WWF Attitude
Reversal windows add light chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
WWE SmackDown vs. Raw 2011
Move sets, match types and creation systems are learnable
WWF Attitude
Move-set knowledge and stamina management reward study
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.