head to head
Sonic Eraser asks more than Silent Hill 2 (2001), and the gap is reads.

Optimization · Pure Optimization
A psychological horror experience where puzzle knowledge and avoidance routing matter more than combat skill.

Optimization · Practiced Mastery
A falling-piece versus puzzle testing combo building against an opponent.
Silent Hill 2 (2001) leans Optimization (Pure Optimization); Sonic Eraser leans Optimization (Practiced Mastery).
Sonic Eraser leans a little harder on execution, though the gap is small.
Silent Hill 2 (2001)
Clunky combat is intentional; survival over precision
Sonic Eraser
Placing pieces fast helps but isn't twitch-defining
Sonic Eraser leans clearly harder on reads.
Silent Hill 2 (2001)
Monsters follow simple fixed behaviours, never model the player
Sonic Eraser
Versus mode rewards predicting opponent's board state
Sonic Eraser leans a little harder on variance, though the gap is small.
Silent Hill 2 (2001)
Some item placements are unknown first time; fixed thereafter
Sonic Eraser
Falling piece order is randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Silent Hill 2 (2001)
Puzzle solutions, route knowledge and weapon use are fully learnable
Sonic Eraser
Lining up combos efficiently to attack opponent is the loop
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.