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
Lane-defense economy optimization against semi-randomised zombie waves.

Optimization · Systems & Chaos
A physics sandbox where you place wobbly armies and watch ragdoll battles resolve themselves.
Plants vs. Zombies 2: It's About Time leans Optimization (Pure Optimization); Totally Accurate Battle Simulator leans Optimization (Systems & Chaos).
Plants vs. Zombies 2: It's About Time leans a little harder on execution, though the gap is small.
Plants vs. Zombies 2: It's About Time
Tapping plants quickly only matters in surge moments
Totally Accurate Battle Simulator
Place units then watch; no hands required
Same score on reads - 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
Zombie waves are announced patterns, not minds
Totally Accurate Battle Simulator
No adaptive opponent in campaign sandbox
Totally Accurate Battle Simulator 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
Totally Accurate Battle Simulator
Wobbly physics makes identical setups resolve differently
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
Totally Accurate Battle Simulator
Unit counters and placement solve each scenario
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.
full breakdown
Plants vs. Zombies 2: It's About Time →
full breakdown
Totally Accurate Battle Simulator →