head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

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

Execution · Grand Arena
A third-person MOBA where skillshot aim meets MOBA mind games.
Command & Conquer: Red Alert 3 leans Reads (Grand Arena); Smite leans Execution (Grand Arena).
Smite 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
Smite
Third-person skillshots raise the aim floor.
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
Smite
Jungle invades and ganks require opponent modeling.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Red Alert 3
Ore spawning and naval choke variance add moderate uncertainty
Smite
Buff timers and minor RNG only.
Smite 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
Smite
Builds, relics, and rotations are theorycrafted.
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.