head to head
Neither is simply harder - they are hard in different places. Braid demands more optimization; The Elder Scrolls V: Skyrim demands more variance.

Optimization · Pure Optimization
A platformer puzzle game built around deducing and exploiting each world's unique time-manipulation rule.

Optimization · Pure Optimization
An open-world RPG mostly about discovering and stacking exploitable progression systems.
Braid leans Optimization (Pure Optimization); The Elder Scrolls V: Skyrim leans Optimization (Pure Optimization).
Braid leans a little harder on execution, though the gap is small.
Braid
Precise jumps and time-rewind timing are load-bearing
The Elder Scrolls V: Skyrim
Combat is forgiving; aim and timing rarely punish you.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Braid
No opponent; solo platforming puzzle
The Elder Scrolls V: Skyrim
Enemy AI is scripted and exploitable; not adaptive.
The Elder Scrolls V: Skyrim leans clearly harder on variance.
Braid
All puzzles are deterministic and hand-crafted
The Elder Scrolls V: Skyrim
Loot tables and leveled lists inject mild randomness.
Braid leans clearly harder on optimization.
Braid
Understanding each world's time-manipulation rule and its exact solution is the game
The Elder Scrolls V: Skyrim
Skill stacking, enchant loops, and exploits are deeply solvable.
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.