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

Execution · Practiced Mastery
Neon 16-bit run-and-gun built on cover play and scripted boss duels.

Execution · Practiced Mastery
Sonic alternates breakneck daytime boost stages with brawling night levels as the Werehog.
Huntdown leans Execution (Practiced Mastery); Sonic Unleashed leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Huntdown
Cover-dodge timing and boss pattern execution
Sonic Unleashed
Daytime boost stages demand reaction-speed precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Huntdown
Bosses telegraph on fixed scripts
Sonic Unleashed
Scripted enemies in both forms
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Huntdown
Minor weapon-drop variation
Sonic Unleashed
First-run stage hazards arrive fast and unseen
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Huntdown
Learning patterns and arena layouts
Sonic Unleashed
S-rank routes and Werehog combat upgrades are 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.