head to head
vs
Clash of ClansvsEco
Clash of Clans leans Optimization (Pure Optimization); Eco leans Optimization (Pure Optimization).
Clash of ClansEco
Axis by axis
Execution1 vs 1
Even - both lean on execution about the same.
Reads3 vs 2
Clash of Clans leans harder on reads: Base layouts anticipate human attackers' habits
Variance3 vs 3
Even - both lean on variance about the same.
Optimization8 vs 9
Eco leans harder on optimization: Government systems, specialisation routing, and ecosystem management are richly solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.