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
A class-based objective shooter remembered for its parkour movement and rocky launch.

Execution · Competitive PvP
A party platform fighter testing scramble execution and couch-rival prediction.
Brink leans Execution (Competitive PvP); Digimon Rumble Arena 2 leans Execution (Competitive PvP).
Brink leans a little harder on execution, though the gap is small.
Brink
SMART parkour and gunfights demand FPS mechanics
Digimon Rumble Arena 2
Smash-style movement and attack timing in chaotic arenas
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Brink
Human teams contest objectives and flank routes
Digimon Rumble Arena 2
Couch opponents bait digivolutions and punishes
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
Digimon Rumble Arena 2
Item and power-up spawns shuffle fights
Brink leans a little harder on optimization, though the gap is small.
Brink
Class loadouts and objective timing are learnable
Digimon Rumble Arena 2
Character matchups and stage knowledge add light depth
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.