head to head
Prototype 2vsUnreal
Prototype 2 leans Execution (Practiced Mastery); Unreal leans Execution (Practiced Mastery).
Prototype 2Unreal
Axis by axis
Execution6 vs 6
Even - both lean on execution about the same.
Reads1 vs 0
Prototype 2 leans harder on reads: Blackwatch and infected never adapt
Variance2 vs 2
Even - both lean on variance about the same.
Optimization5 vs 6
Unreal leans harder on optimization: Weapon choice, secrets, and route knowledge trivialise replays
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

