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

Execution · Competitive PvP
Arcade baseball testing hit timing and pitch prediction in versus play.

Execution · Competitive PvP
Reversal-timing duels where humans bait each other inside scripted spectacle.
Mario Superstar Baseball leans Execution (Competitive PvP); WWE SmackDown vs. Raw 2011 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.
Mario Superstar Baseball
Bat timing and charged pitches are the core motor test
WWE SmackDown vs. Raw 2011
Reversal timing windows reward practiced reactions
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Superstar Baseball
Guessing a human pitcher's mix is the versus layer
WWE SmackDown vs. Raw 2011
Versus humans, reversal baiting becomes a guessing duel
Mario Superstar Baseball leans a little harder on variance, though the gap is small.
Mario Superstar Baseball
Star swings and bobbles add bounded randomness
WWE SmackDown vs. Raw 2011
Momentum swings and AI quirks add mild chaos
WWE SmackDown vs. Raw 2011 leans a little harder on optimization, though the gap is small.
Mario Superstar Baseball
Chemistry pairings and lineups are quickly learned
WWE SmackDown vs. Raw 2011
Move sets, match types and creation systems 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.