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.

Optimization · Pure Optimization
An idle economy where optimal purchase order and room layout do everything.

Optimization · Pure Optimization
Patience-driven crop scheduling and token economics in a browser farm.
PewDiePie's Tuber Simulator leans Optimization (Pure Optimization); Sunflower Land leans Optimization (Pure Optimization).
Sunflower Land leans a little harder on execution, though the gap is small.
PewDiePie's Tuber Simulator
Tapping menus requires nothing
Sunflower Land
Clicking crops requires no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
PewDiePie's Tuber Simulator
No opponent exists to predict
Sunflower Land
No adaptive opponent in farming loops
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
PewDiePie's Tuber Simulator
Minor event RNG around video topics
Sunflower Land
Market prices and seasonal events add modest unknowns
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
PewDiePie's Tuber Simulator
View-per-cost room layouts and upgrade order are the entire game
Sunflower Land
Crop timing, resource chains and trade economics are the game
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.