Exactly. Minecraft is more focused around the survival aspect. Terraria explores the adventure style of gaming.
I don't see why people say that Starbound is a Terraria clone. It's either they aren't giving it a chance, or judging it by its cover.
It's 10% good 90% awful. Then as you play you realize the 10% is useless or detrimental to obtain and use, and then it is just awful.