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.

Execution · Practiced Mastery
Aiming banked bubble shots quickly while planning chain clears.

Execution · Pure Mechanics
Stacking wobbly bricks quickly while sabotage spells fly between players.
Bust-a-Move 4 leans Execution (Practiced Mastery); Tricky Towers leans Execution (Pure Mechanics).
Tricky Towers leans a little harder on execution, though the gap is small.
Bust-a-Move 4
Precise bubble aiming and bank shots under time pressure
Tricky Towers
Placing physics bricks fast under pressure is the core test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Bust-a-Move 4
Versus mode allows mild human pressure timing
Tricky Towers
Timing spells against specific human rivals adds light prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Bust-a-Move 4
Bubble colour feed is random but bounded
Tricky Towers
Brick sequence and wobble physics inject chaos
Bust-a-Move 4 leans a little harder on optimization, though the gap is small.
Bust-a-Move 4
Clearing patterns and pulley setups have known solutions
Tricky Towers
Stable stacking shapes are learnable patterns
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.