head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Pure logical deduction - each nonogram is fully solvable from its number clues.

Optimization · Pure Optimization
A self-aware mystery adventure testing systematic multi-character puzzle solving in a classic idiom.
Mario's Super Picross leans Optimization (Pure Optimization); Thimbleweed Park 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.
Mario's Super Picross
Marking cells has no speed pressure worth naming
Thimbleweed Park
Classic SCUMM-style interface with no twitch elements
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario's Super Picross
A logic grid cannot adapt to you
Thimbleweed Park
Scripted mystery narrative; NPCs never adapt to player choices
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario's Super Picross
The hidden picture is fully derivable from the clues
Thimbleweed Park
Deterministic puzzles throughout the game
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario's Super Picross
Pure logical deduction - every puzzle is literally solvable
Thimbleweed Park
Multi-character inventory puzzles demand systematic causal reasoning
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.