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

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.

Optimization · Pure Optimization
An esports management sim testing draft composition and synergy optimization.
Portal leans Optimization (Pure Optimization); Teamfight Manager leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Portal
Portal placement timing modest.
Teamfight Manager
No twitch input; you only manage, not play
Teamfight Manager leans clearly harder on reads.
Portal
No adversary modeling player.
Teamfight Manager
Pick/ban against opponent tendencies adds light prediction
Teamfight Manager leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
Teamfight Manager
Match outcomes and meta shifts carry randomness
Teamfight Manager leans a little harder on optimization, though the gap is small.
Portal
Pure puzzle-solving optimization.
Teamfight Manager
Drafting comps and player synergy is the solvable core
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.