head to head
Neither is simply harder - they are hard in different places. LMA Manager 2007 demands more variance; Portal demands more execution.

Optimization · Pure Optimization
A football club management simulation game.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
LMA Manager 2007 leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
LMA Manager 2007
no direct execution, pure management sim
Portal
Portal placement timing modest.
LMA Manager 2007 leans a little harder on reads, though the gap is small.
LMA Manager 2007
AI managers scripted, minimal true adaptivity
Portal
No adversary modeling player.
LMA Manager 2007 leans clearly harder on variance.
LMA Manager 2007
match simulation outcomes carry randomness
Portal
Deterministic chambers; no randomness.
LMA Manager 2007 leans a little harder on optimization, though the gap is small.
LMA Manager 2007
tactics, transfers, and finances are deeply solvable
Portal
Pure puzzle-solving optimization.
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.