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

Optimization · Pure Optimization
Methodical clue-gathering through a fixed voodoo mystery with single-solution puzzles.
Back to the Future: The Game leans Optimization (Pure Optimization); Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition 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.
Back to the Future: The Game
Telltale point-and-click, zero dexterity
Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition
Pointing and clicking - no physical demand
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
Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition
A scripted mystery with no adaptive adversary
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
Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition
Clues are hidden information until investigated
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Back to the Future: The Game
Light item-logic puzzles drive each episode
Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition
Day-structured puzzle chains have one intended path
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.
full breakdown
Back to the Future: The Game →
full breakdown
Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition →