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.

Execution · Pure Mechanics
Terry Cavanagh's minimalist reflex gauntlet of rotating walls measured in seconds survived.

Execution · Pure Mechanics
House of the Dead rebuilt as a typing game where zombies die to fast accurate keystrokes.
Super Hexagon leans Execution (Pure Mechanics); The Typing of the Dead leans Execution (Pure Mechanics).
Super Hexagon leans a little harder on execution, though the gap is small.
Super Hexagon
Sub-second reactions at extreme speed, pure reflex ceiling
The Typing of the Dead
Raw typing speed and accuracy wins
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Hexagon
No opponent, only walls
The Typing of the Dead
Zombies follow scripted spawns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Super Hexagon
Pattern order randomized from a known set
The Typing of the Dead
Random word prompts per zombie
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Hexagon
Pattern vocabulary is small, reaction is everything
The Typing of the Dead
Spawn patterns and boss prompts memorisable
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.