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
Cops-and-robbers spin on Battlefield built around heists, chases, and urban shootouts.

Execution · Competitive PvP
Hardcore Eastern Front shooter where exposure for seconds means death.
Battlefield Hardline 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.
Battlefield Hardline
Close-quarters gunplay and high-speed vehicle chases
Red Orchestra 2: Heroes of Stalingrad
Realistic ballistics and one-shot kills demand precise aim.
Red Orchestra 2: Heroes of Stalingrad leans a little harder on reads, though the gap is small.
Battlefield Hardline
Cops-versus-criminals humans adapt heist tactics
Red Orchestra 2: Heroes of Stalingrad
Anticipating human teams' pushes and covered angles.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield Hardline
Spawns and loot grabs shuffle engagements
Red Orchestra 2: Heroes of Stalingrad
Suppression, concealment, and unseen shooters.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield Hardline
Gadget loadouts and mode-specific route knowledge
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.