Thier best confirmed tank is the Ch'onma-Ho III/IV (the sources disagree on differences betweeen III and IV marks).
It seems rather similar to the T-62M/M1 (note, this particular one did not get the glacis add-on)
It is interesting to see (in this and other pics) that, if I am not mistaken, the ERA is used mostly to cover a secondary area such as the turret side. The glacis is naked and the front turret has only few bricks. Granted, the turret front and the glacis seem to incorporate some sort of composite armor (BDD probably, like T-55AM/T-62M1) but it would suggest they do not put a great deal of faith in their ERA (if it is actually ERA).
Overall it is probably marginally better armored (in addition to ERA and side skirt the passive composites could be better integrated on new production vehicles, unlike the add-ons on existing ones) than the T-62M1 but otherwise quite similar.
If they have anything better they have yet to show it. I would not be surprised if the "anything better" consists only of prototypes, propaganda and defectors hearsay.