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
Chaotic arcade soccer with online PvP focus.

Execution · Competitive PvP
Arcade tennis with timing-based PvP mind games.
Mario Strikers: Battle League leans Execution (Competitive PvP); Mario Tennis Aces 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 Strikers: Battle League
Pass-shoot timing, tackle inputs
Mario Tennis Aces
Shot timing, charge mechanics, footwork
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Strikers: Battle League
Online PvP rewards reading opponent positioning
Mario Tennis Aces
Online tennis demands reading opponent placement
Mario Strikers: Battle League leans a little harder on variance, though the gap is small.
Mario Strikers: Battle League
Item and hyper strike chaos
Mario Tennis Aces
Mostly deterministic ball physics
Mario Strikers: Battle League leans a little harder on optimization, though the gap is small.
Mario Strikers: Battle League
Gear builds and team composition
Mario Tennis Aces
Character matchups and tech routes
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.