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 · Competitive PvP
Milsim 50v50 team-tactical shooter.
Battlefield: Bad Company 2 leans Execution (Competitive PvP); Squad 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: Bad Company 2
Bullet drop and recoil demand real aim
Squad
Bullet drop, sway, suppression test aim
Squad leans a little harder on reads, though the gap is small.
Battlefield: Bad Company 2
Destruction and flanks punish positional reads
Squad
Squad tactics versus humans demand prediction
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
Squad
Minimal RNG, comm-driven outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield: Bad Company 2
Class kits and gadgets optimize objectives
Squad
Logistics, FOB placement, kit choice deep
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.