The Prometheus could possibly stand up against the Scimitar.
Voyager with deployable armor would definitely win.
8472 ... no contest there really since the bioships produce extremely large amounts of energy and they would need to fire about 3 or 4 times before Scimitars shields collapse ... after that, one more shot would destroy it.
The big Dominion ship ?
Possible but unknown.
Remember that size rarely matters when it comes to Trek.
Besides, the Dominion only displayed certain technological achievements that were beyond the Feds like the transporter tech and building ships at a faster rate, but everything else ... was more or less comparable to the Feds.
Voyager with deployable armor would definitely win.
8472 ... no contest there really since the bioships produce extremely large amounts of energy and they would need to fire about 3 or 4 times before Scimitars shields collapse ... after that, one more shot would destroy it.
The big Dominion ship ?
Possible but unknown.
Remember that size rarely matters when it comes to Trek.
Besides, the Dominion only displayed certain technological achievements that were beyond the Feds like the transporter tech and building ships at a faster rate, but everything else ... was more or less comparable to the Feds.