It's hard to imagine the Asgard 2 would be better than the Mjolnir given the price point especially since it is the same company. I can't see any company undercutting their own sales by having something cheaper outperform something that costs 3-4x the price. However they are also different designs so would serve different markets as well. The Asgard 2 is also really new and I don't think anyone has one yet.
That's almost what they did with the Magni and Asgard. I've been emailing with Jason from Schiit. He's said that the Asgard 2 is very, very close to the quality of Mjolnir.