Wow what a misleading article. He didn't say it would double the work on the whole game, just on the characters, which totally makes sense. You can't just alter a mesh and slap it on the same rig and call it a day. They would need to rework a lot of things
Platinums: Red Dead Redemption, Killzone 2, LittleBigPlanet, Terminator Salvation, Uncharted 1, inFamous Second Son, Rocket League