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

Optimization · Pure Optimization
Budgeting steam movement and loadouts against hidden but scripted alien positions.

Optimization · Pure Optimization
A watercolor tactical RPG mixing turn-based command with real-time aiming.
Code Name S.T.E.A.M. leans Optimization (Pure Optimization); Valkyria Chronicles leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Code Name S.T.E.A.M.
Manual third-person aiming adds a real but small hands layer
Valkyria Chronicles
Manual third-person aiming inside turns helps
Code Name S.T.E.A.M. leans a little harder on reads, though the gap is small.
Code Name S.T.E.A.M.
Alien AI runs fixed behaviours, never modelling you
Valkyria Chronicles
Enemy AI is scripted and exploitable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Code Name S.T.E.A.M.
Unseen enemy positions and overwatch threats are hidden information
Valkyria Chronicles
Accuracy rolls and interception fire add noise
Valkyria Chronicles leans a little harder on optimization, though the gap is small.
Code Name S.T.E.A.M.
Steam budgeting, loadouts and positioning are the solvable core
Valkyria Chronicles
Unit positioning, class use, and turn routing dominate
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.