It certainly is at that. lol
The FV is based on the same design principle. Says 30 litres on it, but it's way bigger than that, as in it'll hold 30 litres and still have tons of head space left for even the most insane krausen I'd say.
I seriously feel comfortable not using a blow of tube with this thing, even if it managed to somehow reach the airlock the pipe is huge on it, and the cup would hold quite a bit before it overflowed..... I don't know about the other chaps with them, if they feel the same way.