Mikkelsen's big mouth has set the expectations too high for himself. This is a quote from an interview with Dirtfish at the start of the season:
And I have one aim next year, and that is to dominate completely every rally that I’m doing. That means win every ERC round, win every WRC2 round. That’s my sole focus next year, to be the fastest R5 car in every rally.
So far in WRC2 he has 2 wins (one where you can say he was dominating, Monte Carlo) on 5 events. In ERC he has 0 wins out of 4 events. He's not doing bad, but he's nowhere near what he said he wanted to do, despite being in the best position of all drivers competing in the same class.