head to head
Neither is simply harder - they are hard in different places. Grand Theft Auto: San Andreas demands more optimization; Rodeo Stampede: Sky Zoo Safari demands more execution.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.

Execution · Practiced Mastery
An endless-runner about jumping between wild animals.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Rodeo Stampede: Sky Zoo Safari leans Execution (Practiced Mastery).
Rodeo Stampede: Sky Zoo Safari leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Rodeo Stampede: Sky Zoo Safari
timing jumps between animals requires reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Rodeo Stampede: Sky Zoo Safari
no adaptive opponent present
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Rodeo Stampede: Sky Zoo Safari
animal spawns have some randomness
Grand Theft Auto: San Andreas leans clearly harder on optimization.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
Rodeo Stampede: Sky Zoo Safari
zoo collection and upgrade planning matters
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.