head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Systems & Chaos
A tile-matching puzzle of planning clears against a randomized board.

Optimization · Systems & Chaos
A physics sandbox where you place wobbly armies and watch ragdoll battles resolve themselves.
Angry Birds Blast! leans Optimization (Systems & Chaos); Totally Accurate Battle Simulator 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.
Angry Birds Blast!
Tapping tile clusters has no timing demand
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.
Angry Birds Blast!
Solo match game, no opponent to model
Totally Accurate Battle Simulator
No adaptive opponent in campaign sandbox
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Angry Birds Blast!
Board layout and power-up drops are randomized
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.
Angry Birds Blast!
Planning matches and power-up combos to clear objectives
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.