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
A competitive puzzle mashup combining Puyo Puyo chains with Tetris stacking.

Execution · Practiced Mastery
A cover-shooter Rainbow Six blending tactical room-clearing with solid gunplay.
Puyo Puyo Tetris 2 leans Execution (Practiced Mastery); Tom Clancy's Rainbow Six: Vegas 2 leans Execution (Practiced Mastery).
Puyo Puyo Tetris 2 leans a little harder on execution, though the gap is small.
Puyo Puyo Tetris 2
fast precise piece placement under pressure
Tom Clancy's Rainbow Six: Vegas 2
Cover-based gunfights still punish poor aim
Puyo Puyo Tetris 2 leans a little harder on reads, though the gap is small.
Puyo Puyo Tetris 2
human opponents bait garbage and timing
Tom Clancy's Rainbow Six: Vegas 2
Multiplayer brings some human adaptation; AI is scripted
Puyo Puyo Tetris 2 leans a little harder on variance, though the gap is small.
Puyo Puyo Tetris 2
piece/bean randomization each match
Tom Clancy's Rainbow Six: Vegas 2
Enemy placements partially unknown per encounter
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Puyo Puyo Tetris 2
chain-building and stacking theory mastery
Tom Clancy's Rainbow Six: Vegas 2
Room-clearing order and squad commands are solvable tactics
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.