There was a study just recently (someone posted it but I don't have it handy) that looked at fructose intake following exercise and it's effect on fat burning.
On hypocalories (dieting), fructose had zero effect, you got the same fat burning compared to other sugars. This is logical, on below maintenance calories, you do'nt refill liver glycogen effectively under most conditions so the fructsoe will rapidly convert to glucose and get dumped into teh bloodstream. So now slowing of fat utilization for energy.
But at maintenance calories, fructose post workout inhibited fat
burning. For exactly that reason: fructose refilled liver glycogen and slowed fat burning. This is also eminently logical.
Basically, on a diet, it doesn't seem to matter. On hypercalories, it
does, but you're going to gain fat pretty much no matter what you do.
And I forget who it was (Whit) but somene on mfw lost a ton of fat eating all of their carbs from fruit last year. So any effect had to be minimal/nonexistent.