[Scipio]

First my point is that a Klingon warrior and Jem Hadar are much better fighters/troops than any other. But my other point is that the romulans, cardassian on the one side and humans/andorians/vulcans share nearly the same biological strenght. So one point to even their troops strenght.
Further the cardassians are trained poorley but mainly for combat, the romulans are trained well but not only for combat and the Star Fleet personal is trained excellent but only very few in combat. For me its an equal match.
And Further the Cardassians research mainly on Military but they are no high tech race, the Romulans are advance and focus on military goals but also on many other things, and the federation does not focus on military technology but is the advanced by far and gets good phasers/shields because of their other research goals. Its ture that the Romulan PersonelDisrupter is the best Personalweapon in the Alpha Quadrant, better than the advanced Starfleet phaser (not much but they yield more power over more time) but also better than the war purpose only Klingon disruptors (wich are stronger but only dont use the power very well).