Sure thing I can
"When creating a protagonist, it is important not to make him too strong.
For example, if Akainu becomes the protagonist, he is so strong that he can put an end to ONE PIECE within a year." Sound Recording (2012)
I must say you sound a bit unhappy/something like that - I only posted short sentence that is not to your liking.
Of course I know that combat isnt only thing prolonging One Piece - its just one line in context of not making main character of series too strong.
http://i.imgur.com/ZDxEUBe.jpg
http://www.reddit.com/r/OnePiece/comments/27kb01/if_akainu_was_the_main_protagonist_i_could_put_an/
And here you can see all of interviews from Oda in one place thanks to Sandman AP.
http://www.arlongpark.net/showthread.php?t=42229&p=3384784&viewfull=1#post3384784
Is it that obvious? I guess I need to work on my poker face
Just kidding

No, I wasn't unhappy; I was skeptical to be honest. I thought that it was a rumour or a hoax from somewhere.
Thank you very much for linking us to the interview ^^
Does it change anything?
What I wanted to show is that Akainu can fight whole crowd of New World Yonko crew fighters and they are not capable of stopping him at all.
For the argument to be sound, the premise or premises (reasons in support for the conclusion) have to be true but since WB's pirates weren't all defeated by Akainu and since Oda-sensei has used such a hyperbole to depict Akainu as a paragon of strength, the conclusion that he can defeat a yonko's crew members altogether remains, at best, probable.
Saying that he can defeat a yonko's crew members just because he defeated a few of one yonko's crew members, you would be committing the
hasty generalization fallacy. Even if he were to defeat one yonko's crew members, asserting that he can defeat all the 4 emperors' crew members would also be the commitment of the
hasty generalization fallacy.
It could turn out that one of the 4 emperors' right-hand man is on par with Akainu in strength, and this would make it practically impossible for him to take down the entire crew if he were to be Akainu's first obstruction in his attempt to decimate the entire crew. Even if Akainu were to manage to defeat him, his damage during that battle would make him very vulnerable to a defeat at the hands of the rest of the crew members.