head to head
vs
Left 4 Dead 2vsModNation Racers: Road Trip
Left 4 Dead 2 leans Execution (Practiced Mastery); ModNation Racers: Road Trip leans Execution (Practiced Mastery).
Left 4 Dead 2ModNation Racers: Road Trip
Axis by axis
Execution6 vs 6
Even - both lean on execution about the same.
Reads3 vs 3
Even - both lean on reads about the same.
Variance5 vs 4
Left 4 Dead 2 leans harder on variance: AI Director randomizes spawns and items
Optimization6 vs 5
Left 4 Dead 2 leans harder on optimization: Route knowledge and weapon picks solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.