I haven't personally seen the fight myself, so is there any additional information we can get?

1) How many adds/enemies need to be tanked? Given the fact its a 24 man raid, I would assume the last boss would incorporate all parties and not just 1. This also leads to the question if multiple enemies need to be silenced at any given time.

2) Enrage timer. If the above is not overwhelming for 2 tanks then I would question what the enrage timer is, which in turn would ask the question how much dps would be needed.

3) Possibility. Given the 2 factors above, would it even be possible with a fully ilvl90 geared group to pull this off?

Basic questions really, interested to see the fight myself though.