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 classic about managing a sun economy against shambling waves.

Optimization · Pure Optimization
A fragmented-timeline mystery that asks players to reconstruct causality across escape-room puzzles.
Plants vs. Zombies leans Optimization (Pure Optimization); Zero Escape: Zero Time Dilemma leans Optimization (Pure Optimization).
Plants vs. Zombies leans a little harder on execution, though the gap is small.
Plants vs. Zombies
Clicking to plant, minimal pressure
Zero Escape: Zero Time Dilemma
No physical demands in escape rooms or choice screens
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies
Zombie waves follow set compositions
Zero Escape: Zero Time Dilemma
Fragment-based story has no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Plants vs. Zombies
Wave timing and lane pressure vary mildly
Zero Escape: Zero Time Dilemma
Non-linear fragment order and hidden outcomes obscure the path
Plants vs. Zombies leans a little harder on optimization, though the gap is small.
Plants vs. Zombies
Sun economy and lane setups are near-solvable
Zero Escape: Zero Time Dilemma
Connecting all fragments to reach the true timeline is a logic puzzle
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.