head to head
Overwatch asks more than Mobile Legends: Bang Bang, and the gap is execution.

Optimization · Grand Arena
Streamlined mobile MOBA built around fast 5v5 matches and macro objective play.

Execution · Grand Arena
Team hero shooter blending FPS mechanics with ability economy mind games.
Mobile Legends: Bang Bang leans Optimization (Grand Arena); Overwatch leans Execution (Grand Arena).
Overwatch leans clearly harder on execution.
Mobile Legends: Bang Bang
Touch-screen skillshots and combos, simplified mechanics
Overwatch
Hero aim, movement, and ability timing
Overwatch leans a little harder on reads, though the gap is small.
Mobile Legends: Bang Bang
Predicting human rotations, ganks, and objective timing
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.
Mobile Legends: Bang Bang
Fog of war hides enemy positions briefly
Overwatch
Minor spread and matchmaking noise
Mobile Legends: Bang Bang leans a little harder on optimization, though the gap is small.
Mobile Legends: Bang Bang
Builds, drafting, and macro objective control decide games
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.