Genuine feeling amongst bookmakers that povetkin will put up a good fight vs Wlad?

Having monitored the odds for Klitschko vs Povetkin (as I do with most fights) , I find it absolutely staggering that some bookies are giving odds as good as -275 on wladimir Klitschko just to win the fight, and that alexander povetkin has shortened from being a +600 to a +350 and with some bookies even +280! In the fractional version of odds that means wladimir klitschko started out as around a 1/6 absolute certain winner with the bookies, right down to 4/11 with some bookmakers. Now obviously this would usually be given as a sign that a lot of money is going on the klitschko challenger as a lot of casual punters usually like to bet on big money underdogs hoping that they can collect a big pay day, but on examining a graph on oddschecker it seems as though 50.5% of money staked has gone on Wladimir Klitschko , with only 43.54% going on Alexander Povetkin (the remaining % being bet on a draw), this begs the question what do the bookies see in Alexander Povetkin? Are their some crooked judges being used tonight out in Russia ( nothing against russia just trying to figure out why on earth such a dramatic shift in odds have occured). If someone had of said to me this fight 2-3 weeks ago i would of put everything i owned (not literally) on the fact that Wladimir Klitschko will win this fight at ease, but having seen the dramatic shift in odds and willingness of the bookies to take bets on wladimir klitschko at much better odds than usual I am starting to consider whether something fishy is going on. as an example , and i know these 2 fighters are completely different fighters etc, but mariusz wach was started out as a 30/1 underdog to beat wladimir klitschko and on fight week even when money piled on this man bookies still were confident to take bets on him at around 25/1 , with povetkin not that much money has even gone on him and bookies seem so timid to take bets on him! What is going on in your eyes here? am i overthinking?