One of those real contenders is Dexter Jackson, who Heath has defeated at least twice. I don't think he'd have a problem against Sarcev or El Sonbaty. The way he looks now, he can go toe-to-toe with Levrone, Wheeler, and Coleman (all of whom have been beaten by Cutler, who just lost to Heath).
Ronnie lost to Cutler because he beat himself, Flex was sick...Prime Flex wouldn't get beat by Cutler's best...Cutler is thr most gifted bber of all time.
Heath would beat Levrone from the back---in terms of detail. Flex's presence and taper are too much for Phil...and they are about the same in back detail---Phil's lower back, glutes, hams are in better condition, but Flex's shape nudges him...Sarcev and Nasser, Phil has them beat---Sarcev is abs and good legs, Nasser is good from the front and huge.