Both logos seem to have an equal amount of detail, but the Predators make use of more than one or two colors. Aside from black, white and silver, purple is the primary Kings color and there couldn't be a better one. After years of trying to come up with a good logo — failed attempts with purple/yellow and black/silver — the combination of past tries has resulted in a keeper. The Kings, but just by a hair.
The King rules the land and, if he wanted, could have a Predator of any kind shot dead on the spot. He's powerful.
The Kings have existed for 40 years but their one claim to fame is that Wayne Gretzky once brought greatness to the locker room. Without him, the team has never really proved itself as a perennial contender of any sort. Still, the logo is top-notch. I only wish they'd kept the coat of arms logo as the primary instead of switching it with the crown. For that reason, the point goes to the Predators, whose story we already know.