head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Pure Optimization
Lane-defense economy optimization against semi-randomised zombie waves.

Optimization · Systems & Chaos
The series' optimization and attrition logic at its most compressed, with narrative stakes highest.
Plants vs. Zombies 2: It's About Time leans Optimization (Pure Optimization); The Banner Saga 3 leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies 2: It's About Time
Tapping plants quickly only matters in surge moments
The Banner Saga 3
No new real-time mechanics introduced in the finale
The Banner Saga 3 leans a little harder on reads, though the gap is small.
Plants vs. Zombies 2: It's About Time
Zombie waves are announced patterns, not minds
The Banner Saga 3
Enemy AI remains scripted; Dredge patterns are fixed
The Banner Saga 3 leans a little harder on variance, though the gap is small.
Plants vs. Zombies 2: It's About Time
Wave compositions and plant-food drops add per-level randomness
The Banner Saga 3
Corruption mechanic and dwindling resources push variance pressure higher
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies 2: It's About Time
Lawn economy and plant placement are the solvable core
The Banner Saga 3
Final roster management under corruption constraints is the optimization peak
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.