head to head
Overwatch asks more than Warhammer 40,000: Dawn of War, and the gap is execution.

Execution · Grand Arena
Team hero shooter blending FPS mechanics with ability economy mind games.

Reads · Grand Arena
Grimdark RTS where requisition nodes, squad reinforcement, and chapter counter-picks define competitive depth.
Overwatch leans Execution (Grand Arena); Warhammer 40,000: Dawn of War leans Reads (Grand Arena).
Overwatch leans clearly harder on execution.
Overwatch
Hero aim, movement, and ability timing
Warhammer 40,000: Dawn of War
Squad retreat timing and builder unit micro require practiced hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Overwatch
Ult tracking, flanks, and baiting human teams
Warhammer 40,000: Dawn of War
Opponent chapter choice and rush timing must be predicted
Warhammer 40,000: Dawn of War leans a little harder on variance, though the gap is small.
Overwatch
Minor spread and matchmaking noise
Warhammer 40,000: Dawn of War
Relic capture variance and squad reinforcement timing add uncertainty
Warhammer 40,000: Dawn of War leans a little harder on optimization, though the gap is small.
Overwatch
Team comps, ult economy, and positioning theory
Warhammer 40,000: Dawn of War
Requisition node priority and tech tree builds are well-studied
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.