Not to side track this discussion further, and maybe this is more of a comment that the OT purists would appreciate, but wouldn't you think that Obi-Wan would look back on the clone wars with a less than favorable light, given the suffering that Palpatine had orchestrated simply to kill the jedi? When you watch ANH, Luke seems slightly impressed that he fought in the Clone Wars and Obi-Wan seems to have a slightly whistful look on his face, like it was a great time for him. I guess it all comes down to the time frames that Lucas established for the PT, but when you only look at the OT, Obi-Wan looks back fondly on that time ("before the dark time, before the Empire"), while the ROTS Obi-Wan recognizes that they were taken in by the Emperors plot.