As far as I know this is the current best weapon in the world for all the Tempest Rush loving Monks out there. The damage is far superior to any Skorns. In terms of character sheet dps you wont see much of a difference from the top Skorns, but you will feel the difference when playing.
For any non monks who dont know what Tempest Rush is I'll break down some of the basics.
Spirit:TR is a channeling ability that gives a very high movement speed while channeling. It drains 10 spirit per second multiplied by your attack speed. So at its base this mace drains 9 spirit per second compared to 10 for Skorn. But it gets better for the mace - All the attack speed from items you have equipped increase the cost of TR. So if you have 32% attack speed, the mace drains 11.88 spirit per second, compared to Skorn's 13.2 spirit per second. This might sound insignificant if you havent tried TR for yourself, but the extra drain on your spirit is something you will notice immediately. The more attack speed you have the bigger the advantage is for the mace.
And its not like a WW barbarian where you can run through enemies and restore all spirit, you have to attack or rely on items/passives for regen. If you have to stop to attack, restarting tempest rush has an additional 15 spirit cost on start up. This often gets overlooked when playing from theory and not experience.
Damage:So again the damage on character sheet will be very similar, however the real damage you do will be much better than a Skorn. The extra spirit saved from using TR will allow you to use more large attacks like Wave of Light with less need for spirit generating attacks. Not only that, but when looking at a TR weapon its more important to look at the damage range, not the dps. 1382 - 1962. The top Skorns need to socket ruby in order to reach those numbers. The difference might not seem that important, but when you Wave of Light during the added damage of the blinding flash buff, plus the extra damage from aura, MP10 elites drop much faster. Under most circumstances the slight extra attack speed of a Skorn does not allow for more wave of lights during the 3 second buff window.
Liar. All TR monks use Skorn!So why do so many monks use a Skorn then right? If maces are supposedly so much better as I claim? Maces with similar stats are incredibly rare. Check out Diabloprogress for top 2H maces. Very few exist and this one seems to be the best for TR by far. It shows 4 people having it however I am the 4th, and I traded from one of the other 3. I've also never seen it on the other 3 since obtaining it, so I dont believe it is duped, just traded a few times. Believe it or not I did not offer an insane amount of gold, fg, or money to get the mace. It came through a very unique item trade where I had something the other guy wanted(another one of a kind weapon) and he was generous enough to give me this mace for it. If you look this up on diabloprogress you will see the rest of my gear is mediocre. If I bought this item with massive gold/fg/money, the rest of my gear would be looking much better.
In case you do go to diabloprogress and look it up, it shows Im selling it, but I dont really intend to(you wont see any trade threads for it on jsp or D3forums). Im in love with it. I only put it up for sale with a high price on it because if I didn't, a lot of people would spam friends request and try to make offers. Of course anything can be bought at a certain price, but yeah I'll be using this for a long time.