Wireless aside, does the GH3 guitar feel compared with the one from GH2?

According to the gamespot review, there's no big difference between the GH3 guitar and the GH2 guitar besides the wireless. I don't own any GH yet and I'm thinking of picking up the GH2 bundle + GH3 which is on sale at Best Buy Canada for $129.99.

I wished the GH and GH2 would be backwards compatible for the PS3 GH3, that will save me some hassle. What do you guys think?