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.

Optimization · Pure Optimization
A story-first adventure with gentle item-puzzle logic as its only test.

Optimization · Pure Optimization
Solving fixed item-combination puzzles inside a dark comic story.
Back to the Future: The Game leans Optimization (Pure Optimization); Edna & Harvey: Harvey's New Eyes leans Optimization (Pure Optimization).
Edna & Harvey: Harvey's New Eyes leans a little harder on execution, though the gap is small.
Back to the Future: The Game
Telltale point-and-click, zero dexterity
Edna & Harvey: Harvey's New Eyes
Pointing and clicking has no dexterity ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Back to the Future: The Game
Characters follow the episodic script
Edna & Harvey: Harvey's New Eyes
Characters are scripted comedy props
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Back to the Future: The Game
Puzzle solutions are hidden until found
Edna & Harvey: Harvey's New Eyes
Solutions are hidden until discovered once
Back to the Future: The Game leans a little harder on optimization, though the gap is small.
Back to the Future: The Game
Light item-logic puzzles drive each episode
Edna & Harvey: Harvey's New Eyes
Item-combination logic puzzles have single fixed answers
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.