On the Bogner Forum there is a great sticky on how to get the Fender (Deluxe) clean tone. What about on the 20th? Is the clean (green) channel preamp different?
There are little tweaks especially with the boost on the clean channel. I know I can run the gain all the way up on my 2oth and it can still sound good. On my 101b past around 2 o'clock up it sounded like crap. With all that running the clean volume all the way up and lowering the mids works the same way on both models. Hope this helps you out.