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
Destructible-environment shooter with tight gunplay.

Execution · Grand Arena
Team hero shooter blending FPS mechanics with ability economy mind games.
Battlefield: Bad Company 2 leans Execution (Competitive PvP); Overwatch leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield: Bad Company 2
Bullet drop and recoil demand real aim
Overwatch
Hero aim, movement, and ability timing
Overwatch leans a little harder on reads, though the gap is small.
Battlefield: Bad Company 2
Destruction and flanks punish positional reads
Overwatch
Ult tracking, flanks, and baiting human teams
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield: Bad Company 2
Some vehicle/spawn randomness, mostly skill
Overwatch
Minor spread and matchmaking noise
Overwatch leans a little harder on optimization, though the gap is small.
Battlefield: Bad Company 2
Class kits and gadgets optimize objectives
Overwatch
Team comps, ult economy, and positioning theory
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.