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

Optimization · Pure Optimization
A baseball management simulation focused on running a franchise's roster and finances.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Baseball Mogul leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Baseball Mogul
no direct player control of gameplay
Portal 2
Portal placement requires some precision but timing is lenient.
Baseball Mogul leans a little harder on reads, though the gap is small.
Baseball Mogul
no adaptive opposing agent, just simulation
Portal 2
No opponent; puzzles are static.
Baseball Mogul leans clearly harder on variance.
Baseball Mogul
simulated game outcomes involve randomness
Portal 2
Puzzles are deterministic with no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Baseball Mogul
roster building and franchise management dominate
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.