head to head
Tactics Ogre: Reborn asks more than Portal 2, and the gap is variance.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.

Optimization · Pure Optimization
Mastering interconnected class and crafting systems to methodically solve fixed enemy compositions.
Portal 2 leans Optimization (Pure Optimization); Tactics Ogre: Reborn leans Optimization (Pure Optimization).
Portal 2 leans a little harder on execution, though the gap is small.
Portal 2
Portal placement requires some precision but timing is lenient.
Tactics Ogre: Reborn
Turn-based; no timing inputs; menu-driven throughout
Tactics Ogre: Reborn leans a little harder on reads, though the gap is small.
Portal 2
No opponent; puzzles are static.
Tactics Ogre: Reborn
Enemy AI uses fixed class-based targeting, not player modeling
Tactics Ogre: Reborn leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
Tactics Ogre: Reborn
Tarot card draws and random loot add mild variance layer
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Portal 2
Solving the puzzle's logic IS the entire game.
Tactics Ogre: Reborn
Class wheel, finishers, and crafting are extensively solvable systems
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.