Nikon D7100 will kill Panasonic GH3

Different public. Soem people prefer OVF and larger bodies, other are happy with EVF and smaller bodies. Both are excellent cameras, will produce awesome results in able hands.

It's true that most "serious" amateurs and almost all pros prefer dslrs at this point, that's why Canon and Nikon still sell many more IL cameras than other makers (besides larger and more able systems). But amateurs are slowly going for alternative systems, and I believe ML will be more than 50% of IL market in 5 years (all makers together).

--
Renato. http://www.flickr.com/photos/rhlpedrosa/ OnExposure member http://www.onexposure.net/ Good shooting and good luck (after Ed Murrow)