I think that Dimitrenko's real problem is that he overestimates himself. Like Wlad did when before he fought Sanders or Grant before Lewis. He has size, but not much power, a good jab and technique for a big guy, but against Hoffmann it was appearant that he simply expected Hoffmann to fall over. And I would take Povetkin over Dimitrenko because of Pvetkins willpower.
He can move like a devil when nessesary.Sinan Samil Sam is slow,or Vladimir Virchis,or David Tua,but that cant be really said about young Boytsov.