Seems that way, and that's before you actually macro in any gear. You could probably hit 1700+ at that point.

Added to the -40% damage reduction, and you're looking at needing to take roughly 3000 damage to actually break the stoneskin effect.

Edit: I suppose it's sort of an indirect DD buff, in that a living wyvern means AF3+2 set bonus procs, 100% crit jumps + TP, as well as breath damage.