They both have things about them that make them unique enough to the point where I don't think they should really be compared on a scale of quality.
I personally love them both equally, though I'll admit Minecraft has a bit of a special place in my heart, because I've played it longer and considering the amount of YouTubers I watch that play it, it's become a rather large part of my life.
Though with the whole Microsoft buyout debacle, that could change. I'm waiting to see how things play out.