I've seen the ram drop from brewfest twice... I have the swift white hawkstrider.
But I've never seen the brewfest kodo drop.
If you can get a hawkstrider in 10 runs good for you, you have good luck. Others on the otherhand have to run it everyday for months to get it, took me 6 months running it everyday to get it on my hunter back in wrath, then in late cata i went back to farm shattered sun rep on my warrior and it dropped first run, you cant call BS on a drop chance, its a % based. Some people are just luckier than others.