Yay someone gets it :3
JarJar made a good point in a hidden comment for those who don't understand.
Azumarill has a base stat of 50 in ATK and a maximum of 218 when fully invested. Assuming Huge Power doubles the base stat (it doesn't, just assume), it would have a base atk of 100 with a maximum of 328 ATK. However if you double 218 you will get 436 which is equivalent to a Pokemon with 150 base atk such as Groudon.