As far as I am concerned, this tier of raiding was over before it started. Ill gotten gear, boss exploits, and bugging out of encounters; this is all I have heard regarding T13 heroic raiding so far. The raiding community has shown just how far they are willing to go to get their name on the front page of wowprogress.com, and I think the whole community is disappointed in how guilds have conducted themselves in order to get ranked kills. While there have always been exploits and bugs, this tier just seems to amplify and bring all this to the forefront with the breadth of how much foul play is happening.
There are some guilds that are worthy of their rankings and did things the right way to get where they are, but the vast majority of guilds have gotten their hands caught in the cookie jar, or done some other dirty deeds to get their rankings up.
Hagara has some encounter breaking bugs right now that probably make the fight a ton easier. Big Crits killed her on Heroic (World 10 woot) and used a strategy involving classes that can move while casting in order to make the fight easier. I'm not sure if this is a bug or not, or the intended way of killing her on heroic, but it still stands out in my mind that the fight was cheesed somewhat; while not as blatant as other guilds (Shattering throw comes to mind.) it still leaves a bad taste in my mouth. Nevertheless, our guild killed her dead before many many other heroic guilds.
Does it even matter though? The race was corrupt from the start. Many of the top world guilds were out of the race before it even started because they did things they knew were against the spirit of competition. Big Crits is currently ranked #14 in the WORLD. It's a perfect storm that benefits us greatly and spirits are sky high. Does all this diminish our acheivement? I don't know.