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

Optimization · Pure Optimization
Board-game distillation of Hitman into elegant fully-solvable turn puzzles.

Optimization · Pure Optimization
A pure deduction puzzle with a single solvable answer set.
Hitman Go leans Optimization (Pure Optimization); Return of the Obra Dinn 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.
Hitman Go
Turn-based taps, zero dexterity
Return of the Obra Dinn
No mechanical execution required
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Hitman Go
Enemy pieces move on fixed deterministic rules
Return of the Obra Dinn
Static scenes, no opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Hitman Go
All information visible on the board
Return of the Obra Dinn
Fully deterministic puzzle
Return of the Obra Dinn leans a little harder on optimization, though the gap is small.
Hitman Go
Each diorama is a literally solvable movement puzzle
Return of the Obra Dinn
Pure deductive logic on a fixed manifest
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.