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 · Pure Mechanics
Console shooter execution across scripted set pieces and once-massive human multiplayer.
Brink leans Execution (Competitive PvP); Resistance 2 leans Execution (Pure Mechanics).
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
Resistance 2
Weapon handling and boss dodging demand console-shooter precision
Brink leans a little harder on reads, though the gap is small.
Brink
Human teams contest objectives and flank routes
Resistance 2
60-player multiplayer rewarded reading humans; campaign Chimera don't adapt
Brink leans a little harder on variance, though the gap is small.
Brink
Spawn and objective chaos adds noise
Resistance 2
Campaign encounters are set pieces
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Brink
Class loadouts and objective timing are learnable
Resistance 2
Exotic weapon choice and class co-op roles add planning
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.