Just for fun, here is very unscientific comparison between EOS 5d mk II and HTC Incredible S phone. EOS 5d mk II was equipped with Canon EF 24-105mm f/4 L IS USM Lens and HTC Incredible with Vignette app. Fair comparison I would say.
Both images were converted to same size and inserted here. Naturally differeces are immediately clear, HTC picture has some noise visible even in this broad daylight shot, then again Vignette has been used to make the HTC picture at least look different.
All in all, these “cameras” clearly are for different use, but still I would bravely say that mobile cameras can these days already very well be used for snapping at least if combining it with app like Vignette to add some filters to pictures.
So, then the result. Phone gets a point for being always with you, and other point from good selection of photography related apps. EOS 5d mk II gets a points from picture quality and other one from better viewfinder. So official unscientific result is 2-2 Draw. Both camers still have their uses at least for me.