head to head
Rise of Nations: Rise of Legends asks more than Portal, and the gap is reads.

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

Optimization · Pure Optimization
Fantasy RTS spin-off of Rise of Nations with three wildly asymmetric civilizations and hero units.
Portal leans Optimization (Pure Optimization); Rise of Nations: Rise of Legends leans Optimization (Pure Optimization).
Rise of Nations: Rise of Legends leans a little harder on execution, though the gap is small.
Portal
Portal placement timing modest.
Rise of Nations: Rise of Legends
Real-time economy and army juggling needs speed
Rise of Nations: Rise of Legends leans clearly harder on reads.
Portal
No adversary modeling player.
Rise of Nations: Rise of Legends
PvP rewards countering opponents' hero and tech commitments
Rise of Nations: Rise of Legends leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
Rise of Nations: Rise of Legends
Map layouts and neutral sites vary
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Portal
Pure puzzle-solving optimization.
Rise of Nations: Rise of Legends
Asymmetric faction trees and expansion timing reward deep study
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.