Dwarf shortage

[Zigûr]

This may seem like an odd question but... does anyone else think that the Dwarves in the films are too small? Not too short necessarily, but they always seem to me to be rather tetchy when they appear alongside Men and Elves, as opposed to the stout and stocky way they appear in my head. The Professor describes them as being 4.5-5 feet I believe, and while I appreciate that we generally see them around Elves and High Men which might skew the perspective, I can't help but feel that they don't come across as particularly robust or solidly built compared to the other people around them. They just seem rather small, like bearded Hobbits. I didn't notice this as much with Gimli (although I still did to some extent). It might be exacerbated by the fact that some of the 'focus Dwarves' in "An Unexpected Journey", such as Thorin, are kind of slim. It's also possible that the Hobbits are a little taller than in the books (and so is Gandalf, for that matter); Bilbo barely seems smaller than any of the Dwarves.

It particularly struck me during the moon-runes scene, from which there is an excerpt here: http://www.youtube.com/watch?v=1CjA_Pb3bk8
Is it just me, or do the Dwarves seem tiny, and Bilbo really quite large? I realise there's only so much visual trickery that can be done but I rather like to imagine that the Dwarves compensate for their smaller stature with an altogether broader frame (more square than rectangular, if you will). Here they just seem, well, little.

I apologise if this comes across as a rather bizarre thread but the notion has been weighing on my mind for some time, which probably suggests that I have too much of it free. And I would be curious to know if there were any other Dwarf proportion enthusiasts out there!