head to head
vs
Portal: Still AlivevsThe Swapper
Portal: Still Alive leans Optimization (Pure Optimization); The Swapper leans Optimization (Pure Optimization).
Portal: Still AliveThe Swapper
Axis by axis
Execution3 vs 2
Portal: Still Alive leans harder on execution: Some flings need timing, but puzzles rarely demand twitch precision
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 0
Portal: Still Alive leans harder on variance: Chambers are fixed and fully visible once entered
Optimization8 vs 8
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.