Not sure it's quite that good - nothing in Split appears to indicate that the copies get any gear, or benefit from any gear or buffs active on the original. So it's a fully equipped and buffed L13 and a naked L13 that just got slapped with a disjunction.
Or you buy two full sets of gear with the WBL intended for one, and make, equip, and buff the copy out of combat.
Or make a build that is entirely gear and buff independent.
If you want the copy to be more than just ablative meat, anyways.