head to head
Dota 2 asks more than Command & Conquer 3: Tiberium Wars, and the gap is reads.

Optimization · Grand Arena
Fast tiberium-economy RTS with a once-thriving competitive 1v1 scene.

Optimization · Grand Arena
A deep MOBA where draft theory and adaptive mind games drive every fight.
Command & Conquer 3: Tiberium Wars leans Optimization (Grand Arena); Dota 2 leans Optimization (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer 3: Tiberium Wars
Fast micro on squads and harvesters
Dota 2
Last-hits and spell timing demand precision.
Dota 2 leans clearly harder on reads.
Command & Conquer 3: Tiberium Wars
Ranked 1v1 rewards reading enemy tech paths
Dota 2
Drafts and ganks revolve around adaptive opponents.
Dota 2 leans a little harder on variance, though the gap is small.
Command & Conquer 3: Tiberium Wars
Fog hides tech switches until scouted
Dota 2
Crits, bashes, and bounty runes add noise.
Dota 2 leans a little harder on optimization, though the gap is small.
Command & Conquer 3: Tiberium Wars
Tight build orders and tiberium control
Dota 2
Item builds, timings, and lane theory are 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.