So it seems that MS Paint isn’t completely useless afterall (in the commercial realm at least). Sure the billboard looks like a child’s drawing, but no problem for Scirra because that is the type of thing they wanted (a type of job that the world’s most basic paint program happens to be good at).
I can’t be amazed by that because the link doesn’t seem to be working for me. Anyway I felt curious so I searched for great graphics made using Paint and this is what Google came up with. They’re really cool.