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

Execution · Competitive PvP
Free-to-play hero shooter where loadout cards customize champions in objective team fights.

Execution · Competitive PvP
Hardcore Eastern Front shooter where exposure for seconds means death.
Paladins leans Execution (Competitive PvP); Red Orchestra 2: Heroes of Stalingrad 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.
Paladins
Hitscan aim and ability timing in firefights
Red Orchestra 2: Heroes of Stalingrad
Realistic ballistics and one-shot kills demand precise aim.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Paladins
Human teams flank, bait ults, and adapt
Red Orchestra 2: Heroes of Stalingrad
Anticipating human teams' pushes and covered angles.
Red Orchestra 2: Heroes of Stalingrad leans a little harder on variance, though the gap is small.
Paladins
Card draft order adds mild run variance
Red Orchestra 2: Heroes of Stalingrad
Suppression, concealment, and unseen shooters.
Paladins leans a little harder on optimization, though the gap is small.
Paladins
Loadout card builds and item counter-buying
Red Orchestra 2: Heroes of Stalingrad
Map chokepoints and role mechanics reward study.
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.