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 · Grand Arena
Stick-skill shot timing plus scheme prediction against human opponents, layered on build optimisation.

Execution · Competitive PvP
Class-based team shooter with deep mind games.
NBA 2K26 leans Execution (Grand Arena); Team Fortress 2 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.
NBA 2K26
Shot timing, dribble combos and defensive sliding demand practiced sticks
Team Fortress 2
Projectile aim and rocket jumps reward hands
Team Fortress 2 leans a little harder on reads, though the gap is small.
NBA 2K26
Online opponents bait coverages and adjust schemes constantly
Team Fortress 2
Spy/sniper duels are pure prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K26
Shooting RNG and card pulls inject noise
Team Fortress 2
Random crits and spread inject RNG
NBA 2K26 leans a little harder on optimization, though the gap is small.
NBA 2K26
Builds, badge setups and playbook knowledge are studyable systems
Team Fortress 2
Class loadouts and map routes solvable
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.