I'm guessing AC has never even glanced at this game, or is basing it on his experiences with Cities XL, an entirely different franchise by an entirely different company that has absolutely no connection with Skylines?
Cities:Skylines is a successor to Cities In Motion, though the developers seem to have listened to users and greatly improved everything they could. Right now, it's rated at 96% thumbs up, with over 10,000 positive reviews.
I don't think anybody in their right mind could say Cities:Skylines "sucks"
Cities XXL, on the other hand, the latest chapter of Cities XL that just came out in February, doesn't seem to be getting a very receptive review (though it still might be better than EA/Maxis' Sim City)