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 · Pure Mechanics
A falling-capsule puzzle testing speed placement to clear virus layouts.

Execution · Pure Mechanics
Stacking wobbly bricks quickly while sabotage spells fly between players.
Dr. Mario Online Rx leans Execution (Pure Mechanics); Tricky Towers leans Execution (Pure Mechanics).
Dr. Mario Online Rx leans a little harder on execution, though the gap is small.
Dr. Mario Online Rx
Fast capsule placement under speed-up is the lead skill
Tricky Towers
Placing physics bricks fast under pressure is the core test
Dr. Mario Online Rx leans a little harder on reads, though the gap is small.
Dr. Mario Online Rx
Versus play adds light anticipation of opponent tempo
Tricky Towers
Timing spells against specific human rivals adds light prediction
Dr. Mario Online Rx leans a little harder on variance, though the gap is small.
Dr. Mario Online Rx
Capsule colors are random but quickly mappable
Tricky Towers
Brick sequence and wobble physics inject chaos
Dr. Mario Online Rx leans a little harder on optimization, though the gap is small.
Dr. Mario Online Rx
Clearing virus layouts has known efficient patterns
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.