Mine has 15-6-15 with same move set and i would rather have 15-15-6 if i could choose.
I would be rlly happy if i would get your Snorlax for my collection, it would become my 2nd best defender.
(my 15-6-15 is always my number one baby)
Snorlax is pretty damn rare, i only seen one wild since the game was launched, but i got 2 from eggs and 1 from lure, so i been pretty lucky.
Just pretty hard to keep many Snorlax fully powered.
One is fully powered 3000+ (L+BS)
One needs 2 power ups and then it is 3000+ (ZH+BS)
One is only 2400cp and need many power ups and can only reach 2900+ for my current level. (bad IV) (L+BS)
One Snorlax was 300cp and i made burgers out of it...i mean....sent it to the professor ofc ^_^
(game didnt have buddy system back then)
You can walk candys for it, but dont power up until you can power it up to max level.
You might find better one while collecting candys, if you lucky.