Kubrat Pulev is a smart guy. Hes already prepared for Wladimir by facing really athletic and skilled tall fighters as shown below. This guy he beat is taller than wladimir so wlad will be no trouble.
Pulev has a really good strategy. He knows the last two guys who knocked out wlad were fat asses and sam peters, also a fat ass, dropped him so he is doing some hard core james toney style training.