I'm not certain that those numbers for Flozell are accurate. I do seem to recall that he had a leg injury going into the combine. If he really weighed in a 326 at the combine, he must have been on a crash diet. I don't think he played a down in his final year at Michigan State or at any time with the Cowboys under 335 lbs.
In regards to Fluker, his forty time was not great and it was not terrible; however, if you compare him to some other players you'll see that a guy like Jordon Mills ran a slower forty (5.37 vs 5.31) but a faster 10-yard split (1.77 vs 1.83). It is interesting that Fluker didn't perform the 3-cone or short-shuttle drills.
On a final note, Flozell played Left Tackle in the NFL against some really good pass-rushers. Are there any draft analysts that think Fluker can play Left Tackle?