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
Sequel refining the fast rabbit platforming with co-op and multiplayer modes.

Execution · Practiced Mastery
Stylish aim and slow-motion positioning against waves of scripted goons.
Jazz Jackrabbit 2 leans Execution (Practiced Mastery); Stranglehold 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.
Jazz Jackrabbit 2
Fast movement, ammo juggling, tight jumps
Stranglehold
Slow-motion dive-shooting still rewards aim and style timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Jazz Jackrabbit 2
Mainly scripted; light multiplayer modes existed
Stranglehold
Goons spawn in scripted waves, never adapting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Jazz Jackrabbit 2
Deterministic levels
Stranglehold
Destructible arenas play out the same each run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Jazz Jackrabbit 2
Weapon choice and secret routes
Stranglehold
Style-point economy and Tequila Time management are learnable
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.