head to head
Neither is simply harder - they are hard in different places. Phoenix Wright: Ace Attorney demands more variance; Portal 2 demands more execution.

Optimization · Pure Optimization
A courtroom drama where finding the single correct piece of evidence to shatter each witness's testimony is the loop.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Phoenix Wright: Ace Attorney leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Phoenix Wright: Ace Attorney
Menu-based courtroom; zero physical skill
Portal 2
Portal placement requires some precision but timing is lenient.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Phoenix Wright: Ace Attorney
Witnesses follow scripted testimony; no adaptive opponent
Portal 2
No opponent; puzzles are static.
Phoenix Wright: Ace Attorney leans clearly harder on variance.
Phoenix Wright: Ace Attorney
Hidden contradictions in testimony are unknown until pressed
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans clearly harder on optimization.
Phoenix Wright: Ace Attorney
Identifying the precise contradiction and presenting the correct evidence is fully solvable
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.