Who wins? Does Khan outspeed & outbox Gatti to a points decision, or does 'Thunder' Gatti break him down and stop him inside the distance. Personally, it's a toss-up for me as I can see both guys winning, I would confidently pick Khan if not for his poor punch resistance, but Gatti was inconsistent & lacked everytime he stepped up. If I had to pick I'd say Khan by competitive, but clear decision (8-4/9-3 type), which looks similar to the Maidana fight, where I can see him getting hurt several times, while going down at least once.
This is a good matchup, cause both were extremely vulnerable, but I'd take Khan. He did manage to beat Judah, Paulie, and Maidana.... Gatti would have lost to all three (ESPECIALLY Maidana). Gatti could of course catch and stop Khan, but I think the more likely path is Khan dominating Gatti with his handspeed and busting him up.
I would definitely favor Kahn but Gatti is very game I could see Kahn getting sloppy and Gatti timing him