I was fairly decent at GH2. I made it all the way through expert, but only got 3's on the last set or two and never made it through Jordan on Expert. GH3 on hard reminds me of GH2 on expert, or at least the last few sets on expert. I did finally make it through Raining Blood and the Lou battle on hard and have made it up to that set on expert but really got sick of the stupid shit they pull to make the songs more complex. They add extra complexity to songs that aren't even that difficult to play in the first place just because they want to ramp up the challenge (Slipknot, I'm looking at you).
A positive for the game though is the vast number of master tracks instead of covers. If there was a master track available for a song they got it, and in a couple cases got the original band to re-record the song.
I actually prefer this set list more than the previous 2 (Rock of the 80's can burn in the fires of hell for all I care, I hate that version). The hammer ons and pull offs are much easier to accomplish, the guitar that comes with it is vastly superior to all its previous iterations and any new competitors. They took out some characters, Clive being one and my friend mourns the loss of Pandora as well. Really they should have gone the Rock Band route and let you make custom characters, its not all that complex and it isn't like the rest of the game is that complicated to make. Maybe just have some presets made so that you can create your favorite old GH characters if you wanted to.
I've played both GH3 and Rock Band a fair amount. If you don't have a group of friends and you only really want to play pretend guitar then GH3 is the game to play. The guitar work in Rock Band feels as stiff as the original GH did. However if you have a group of friends then Rock Band is where its at, the world tour mode is just a blast, creating your own rockers is great fun and wailing on that drum kit never gets old (assuming the equipment doesn't break in 2 days like it has been for 80% of the people who've dished out the $170 US for it.)
Rock on.
And yes rhizic, you are the only one who things GH sucks.