Guitar Hero experiment

Due to my disappoinment with Guitar Hero World Tour's difficulty level (nobody should be able to get 100% and a full combo on a first attempt at a song on expert), I am conducting a bit of a Guitar Hero experiment to see if GHWT is really that easy or if I have just improved that much. Starting tonight, I'm going to go back through all of the games on expert and rate each one on their difficulty. Here's my prediction:

1 (most difficult) - Guitar Hero 3
2 - Guitar Hero 2
3 - Guitar Hero 1
4 - Guitar Hero 80's
5 - Guitar Hero Aerosmith
6 - Guitar Hero World Tour

There are some differences between the games that will skew the ratings a bit. For example, the hammer on/pull offs in Guitar Hero 1 are near impossible compared to GH2 and they made it even easier in GH3. I will have to use different controllers for the PS2 games (GH1 and 80s) and the 360 games (GH2, GH3, GHA and GHWT). This shouldn't be too big of a factor, though.

In any case, it's going to be fun to go back through the games and play the more fun songs again.