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

Execution · Competitive PvP
A class-based objective shooter remembered for its parkour movement and rocky launch.

Execution · Competitive PvP
Arcade tennis with timing-based PvP mind games.
Brink 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.
Brink
SMART parkour and gunfights demand FPS mechanics
Mario Tennis Aces
Shot timing, charge mechanics, footwork
Mario Tennis Aces leans a little harder on reads, though the gap is small.
Brink
Human teams contest objectives and flank routes
Mario Tennis Aces
Online tennis demands reading opponent placement
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Brink
Spawn and objective chaos adds noise
Mario Tennis Aces
Mostly deterministic ball physics
Brink leans a little harder on optimization, though the gap is small.
Brink
Class loadouts and objective timing are learnable
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.