Hard to know... Principally because they pay minimum 0.012 BTC, very high amount for a faucet. You claim 1000-3000 every 10 minutes, so you need at least (earning 3000 satoshi every claim) 400 claims that can be done in 4000 minutes, about 3 days without sleep, claiming every 10 minutes (with luck, because you can earn 1000 satoshi too).
I think it's just a waste of time. Need to wait and claim many times to know if it's legit or not. And they can ban you anytime for any reason (like say you are cheating) and there is nothing you can do if this happen. Better to stay away and use instantly paying faucets.