In Voyager we learn that the Kazon have no replications and no transporters, and I assume that Kazon tech is overall inferior to that of the 24th century starfleet, or even other Alpha Quadrant powers. I guess that their ships and other tech is comparable to 23rd century TOS-era Starfleet, and even then the Kazon lack transporters, something that Starfleet and other species had in mid to late 22nd century, which puts them at an even more disadvantage. An old Miranda or Excelsior class would probably have sufficed in taking down a Kazon vessel. The only reason that the Kazon could overwhelm Voyager was that she was alone in the Delta Quad and the Kazon had more ships and help from Seska.