What a fucking joke. As someone well known once said, if you're a bug on a software and people start leveraging it and depending on it then it isn't a bug, it is a feature - the same goes for MS Office, since it has the largest user base and the standard actually came from there then what it renders is actually the correct thing no matter what you may think.
Yes the ODF is obviously a better standard than OOXML and that's because ODF was designed from the ground up after seeing the fuckups MS did for years while trying to get something to work. It's very easy to point fingers after the fact, same way it's easy to know the lottery numbers of last week's draw but not for next week's.