head to head
World of Tanks asks more than Command & Conquer: Red Alert 3, and the gap is variance.

Reads · Grand Arena
Three-faction Cold-War RTS with naval combat where faction asymmetry and multi-front pressure are the core tests.

Reads · Mind & Math
Slow-burn tank PvP with deep meta.
Command & Conquer: Red Alert 3 leans Reads (Grand Arena); World of Tanks leans Reads (Mind & Math).
Command & Conquer: Red Alert 3 leans a little harder on execution, though the gap is small.
Command & Conquer: Red Alert 3
Naval and air micro alongside base-building taxes player bandwidth
World of Tanks
Aim and lead matter but slow
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Red Alert 3
Three-faction asymmetry means opponent choices must be constantly predicted
World of Tanks
Map positioning versus humans is reads
World of Tanks leans clearly harder on variance.
Command & Conquer: Red Alert 3
Ore spawning and naval choke variance add moderate uncertainty
World of Tanks
Shell RNG and matchmaking swing fights
World of Tanks leans a little harder on optimization, though the gap is small.
Command & Conquer: Red Alert 3
Production order and defensive placement are learnable but more flexible
World of Tanks
Tank loadouts and crew skills solvable
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.