One's older than the other, so that's part of it. DA has lost some of its crowd lately, so that's part of it. And sometimes people are just random. I've got stuff I spent hours working on that got few views while stuff I threw together got crazy faves. And then I've seen something that looks like what I'd draw get tons of faves while my own work gets next to no views. It's all very random.
I've been thinking about that too, but it seems like that isn't what makes it more interessting. By the time I drew da snake I did a plenty of 2-frame animated pictures that didn't get that much attention...
Tell me. I still wonder why a crappy muro scribble of mine got more favorites than a highly detailed flat color drawing ... I think that we will have to accept that there are some things we'll never truly understand.
I don't care for popularity, I prefer to draw, paint and write what I want to draw, paint or write. Still, sometimes I wonder ... it also is hard to improve when your worst crap gets more attention than the pieces you worked really hard at.
It's not necessarily likeablity, it's just how much it gets noticed. Once something gets faved it's in the favorites of that person and thus in two places on the site where it can be seen, while if the other deviation doesn't get faved it's only in one place and thus has less chance of being noticed.