Yes you have to up his speed as he was able to completely beat belladj to the through ball but also outpace him with the ball at his feet,the only defender i have seen keep up with him was aly cissokho who also needs to be updated on this site.
I would put aubameyang at 89 acceleration and 88 top speed,his dribbling speed would be around 85 to 86,he is really that quick,some people call the fastest player in france even though mazzoo of bordeaux and aly cissokho might have something to say about that.
Look at 1 minuted in this video how he left them algerian defenders.http://www.youtube.com/watch?v=BKrj83E_hP4
And here his another video which shows just how quick he is,me being gabonese makes me have to really fight for this guy as we have never had a player blessed with not only talent but so much pace,i am always keeping an eye on him.
See at 5.54 the way he leaves those 2 algerian players and that with the ball so we can clearly see he is quicker than what is given here. and at 6.13 see his acceleration compared to belladj who couldn't keep or catch up to him and i know a lot of you consider belladj to be a speedy player.http://www.youtube.com/watch?v=YintrsRdHEc