well, depends on the tools doesn't it, and how many people are lazy and just tweak the example textures (or if its so difficult thats all people can do)
are there no shadows in WAR? Looking at your pictures it seems really flat looking :( for example http://old-folks.guildlaunch.com/guild/library/gallery/56023/freddy%5Em_0268779.jpg
Ah OK - yes, it might be. Completely depends on the barrel that you're modelling. On the example one I linked above for you the hexagon part was welded on, and there was a cylindrical cap. :)
Proportions look alot closer to Dwarf now. It's interesting to see how different companies get that look for example comparing a WoW Dwarf to a AD&D one.
I'll do that at later since I needed renders right now and I'm not so familiar "yet" with in example marmoset or UDK. (Trying to learn) ^_^ Is that you Kostas?
If you decide to go with Unity it's relatively easy to setup most of the coding. Here's an example project http://unity3d.com/support/resources/tutorials/2d-gameplay-tutorial