I guess the question I'd have, and one I've been pondering lately is, why does either have to be better or worse? If you don't like the interface, then don't download it. Too many times developers (including me, which is why NANY is hard for me at times) think that unless they have a new idea, they have nothing to say. It's not just in development, but writing, art, movies, etc. And it's not just about the product itself, but about the themes. As long as it does what it says it does, and there isn't a non-obvious flaw that would be a potential weakness to those that are using it, and that they might not know, then just introduce people to other software (I'd not heard of rufus) while getting away from the negativity towards them.
And as far as the size and what they're doing- both are open source. Neither is hiding anything. The size is probably due to libraries or something, but I haven't looked.
Just my opinion, and something I've been thinking about a lot lately.