Guitar Hero IV to go the Rock Band route

[FreeTalkLive]

BottledSpringWater said:
"Sounds like Rock Band may be one-upped by the next Guitar Hero installment. "

It's offering the exact same as Rock Band,
where is the one-upping?

 I think the section where regional songs was suggested is what the one-upping is about.  Guitar Hero already has the best guitar (the Wii version) and a much larger base.