OK..I didn't know that.. however I I was thinking about controllers like the bcr2000 .. do you think it is possible...???
Yes, the BCR/BCFs are working in both directions (send to /receive from LIVE)
I don't understand well the difference and if is just a controller stuff or also a software thing.. I don't see the where is the point actually and I'd like to understand better
I would say it mostly depends on the type of knobs, faders, ... on the midi controller:
Let's say, your midi controller has motorized faders
(like the BCF) or endless encoders
When you change a (mapped) parameter in LIVE, the fader/encoder position on the controller will also be updated.
If you have a midi controller with 'absolute' knobs/faders
(like the Nanokontrol), this won't happen.
Check out this video which might bring some insights about the differences: http://www.youtube.com/watch?v=7UhlD3hLVf8