It's generous they made Povetkin look as tall as Joshua on that poster. Inside the ring he will look as physically outmatched as he was vs. Wladimir.
You never know, they might have put Povetkin on "Captain America Serum", making him a couple of inches taller and strong enough to keep a heli from taking off.
Povetkin's a completely different fighter today than he was in 2013. More experience, smarter, he's gonna do it.
AJ has a 7" reach advantage. Klitschko had a 6" reach advantage and you saw how easily he held off a younger Povetkin. I don't see this being much of a contest.
Did you expect the creator to only show Povetkins head on the bottom of the picture ? http://k2promos.com/wp-content/uploads/2015/10/wladimir-klitschko-41.jpg Poster ^ http://www.sportune.fr/wp-content/uploads/2012/03/iconsport_apr_121011_05_16.jpg Reality^
Joshua will use his reach and jab to fight off Povetkin.. Wlad used his height and weight. Big difference.
My favorite poster, the height difference taken to a new level: https://www.eyeonthering.com/sites/default/files/valuevhaye.jpg