I always figured them for :
Federation and Klingons - In equal first place for the major powers that we know of.
Romulans - A fairly distant second. Still a significant military power, but not capable of taking on either the Federation or Klingons alone, and certainly not together.
Cardassians - Always seemed to be the weakest of the major powers. The Klingons sent one third of their fleet and that was almost enough to conquer Cardassian space completely. And one on one, Cardassian ships seemed weaker than the Federation ones by far.
However, it's worth noting that there's a fundamental difference between the Federation and the others. The Klingons practically dedicate their society to warfare. The Romulans seem to be a heavily martial society, as do the Cardassians. All probably spend a far larger share of resources on their fleet than the Federation do, AND all of them build dedicated warships whilst the Federation builds science vessels with some guns on them.
That the Federation can do this and still come out as at least equal to the Klingons, says to me that they have considerably more military potential than any of the other powers, perhaps even more than all of them combined. You only have to look at how the Defiant could cut through Cardassian ships with ease, could take on Vor'Chas and the like without breaking a sweat, and it's clear that if the Federation dedicated most of their resources to building a true military fleet, it would be an order of magnitude beyond any of the others.
Federation and Klingons - In equal first place for the major powers that we know of.
Romulans - A fairly distant second. Still a significant military power, but not capable of taking on either the Federation or Klingons alone, and certainly not together.
Cardassians - Always seemed to be the weakest of the major powers. The Klingons sent one third of their fleet and that was almost enough to conquer Cardassian space completely. And one on one, Cardassian ships seemed weaker than the Federation ones by far.
However, it's worth noting that there's a fundamental difference between the Federation and the others. The Klingons practically dedicate their society to warfare. The Romulans seem to be a heavily martial society, as do the Cardassians. All probably spend a far larger share of resources on their fleet than the Federation do, AND all of them build dedicated warships whilst the Federation builds science vessels with some guns on them.
That the Federation can do this and still come out as at least equal to the Klingons, says to me that they have considerably more military potential than any of the other powers, perhaps even more than all of them combined. You only have to look at how the Defiant could cut through Cardassian ships with ease, could take on Vor'Chas and the like without breaking a sweat, and it's clear that if the Federation dedicated most of their resources to building a true military fleet, it would be an order of magnitude beyond any of the others.