I actually didn't think Midas Whale was all that great in the knockout round.
When it comes to Adam, he's been known to take the lesser performances in the battle and knockout rounds if he thinks they have better overall talent that he can help out. Last season he was pretty vocal a couple times for Blake to take the singer who had the lesser performance because of what he saw in them.
Also, Orlando Dixon was an instant goner going up against Judith Hill, but the background singers drowning him out toward the end of his song is a problem that has plagued The Voice for the past couple seasons.
I think last season had far better talent than this season.