[OmarIsmail]

The converse is that having one supreme superpower is better for world peace because there's nobody to compete with them militarily. Therefore there's only one power that can decide to take military action (the superpower). This is because the weak players won't start a war because they will get crushed.

However, if N > 1 powers are on equal footing where starting a war does NOT mean you get crushed, now there's N > 1 actors that can start a very large war. And that may have compounding effects where likelihood of war isn't just Percentage * N, but instead some exponent of N because the increased likelihood of war itself increases the likelihood of war.

One country misusing its power is probably less destructive to humanity than superpowers militarily fighting (i.e. number of deaths/problems caused by US wars since WW2 is substantially less than deaths during WW2).