No, I don't actually know that. I don't think I am head and shoulders above the next player, in fact I know I am worse than many. I know that a lot of my 7th edition wins were due to people not understanding my army or how it plays and me understanding it intimately. This is what I mean when I say that some of those players could place despite a book that was considered bottom tier. I do know that when I picked up a non-ogre army I was kicking tail because playing Ogres forced me to think about things a bit differently and pay attention to my mistakes as I couldn't make any and still hope to win.
Now those people who were loyal to Ogres and could place despite being at what was considered a disadvantage going in are still playing Ogres and really the army hasn't changed much, it just had prices lowered, limitations lifted, and access to more tools to do the job. So a strong core understanding of how the army plays has carried through. The learning curve from the old book to new was about nil for most Ogres players I have talked to.
At the same time dealing with an army that is ALL Monstrous Infantry/Cavalry except for a couple cheap support troops, is a fairly new thing for many players. Dealing with units that can shoot ok and do ok in combat is new to people. I've talked to players that have stated that Pistols on ME and Leadbelchers are not good. Their reasoning is you are paying for something you are not using as either you are shooting and not using the CC ability or the reverse is true. They are used to troops that focus in one area and miss the subtle point that Leadbelchers are basically naked Ogres in a fight. They forget that Impact Hits and Stomps might swing a combat. These are all little mistakes but as you know in competitive play, every little mistake a chance for your opponent.