In Treachery, Faith, and the Great River when the Weyon defects the Runabout takes several hits from Dominion vessels, the first few were under powered as warnings but then they stated they were going to stop them no matter what and made a few direct pull power hits from weapons that blew a GCS to pieces in a few shots.
I'm willing to concede on the first point, but certainly not on the second. A nation's ability to impose itself politically on a given region is predicated on its military strength. Right now, the dominant industrial power on the planet is China, and the key financial centre is London, but the superpower is the US, because of its vastly superior military strength. The changeover will only come if and when the US either accepts that it isn't the top dog any more, or it picks a fight with China and gets thumped.
I suppose I agree this when put like that.