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 shooter spin-off of the tower-defense series with PvP and co-op modes.

Execution · Pure Mechanics
Free-to-play military shooter mixing class-based PvP with co-op missions.
Plants vs. Zombies: Battle for Neighborville leans Execution (Competitive PvP); Warface leans Execution (Pure Mechanics).
Warface leans a little harder on execution, though the gap is small.
Plants vs. Zombies: Battle for Neighborville
aim and movement in class-based shooter combat
Warface
Aimbot dominates gunfights; recoil control and flick aim decide duels.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies: Battle for Neighborville
predicting human opponents' pushes and flanks
Warface
Human PvP positioning and peek mind-games in versus modes.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies: Battle for Neighborville
minor loot and spawn randomness
Warface
Spawn and enemy position uncertainty, minor.
Plants vs. Zombies: Battle for Neighborville leans a little harder on optimization, though the gap is small.
Plants vs. Zombies: Battle for Neighborville
class builds and lane strategy are solvable
Warface
Loadout grind and class synergy matter but are mappable.
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.