head to head
Neither is simply harder - they are hard in different places. My Racing Career demands more variance; Portal 2 demands more execution.

Optimization · Pure Optimization
Long-horizon planning of driver development and race strategy through menus.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
My Racing Career leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
My Racing Career
Text-based management - zero physical input
Portal 2
Portal placement requires some precision but timing is lenient.
My Racing Career leans clearly harder on reads.
My Racing Career
Rival managers compete but through systems, not direct prediction
Portal 2
No opponent; puzzles are static.
My Racing Career leans clearly harder on variance.
My Racing Career
Race incidents and development rolls add noise to plans
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
My Racing Career
Driver development, setup and strategy math is the game
Portal 2
Solving the puzzle's logic IS the entire game.
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.