Alright, here's a few strong points for Steelix compared to Skarmory. I'm not saying that either one is better, but I think they have different advantages. * Steelix is bulkier than Skarmory. His defenses and HP are much better than Skarmory. * He is immune to Electric, but vulnerable to Ground. Ground moves are often physical however, meaning that he can survive them unless they are STAB. Skarmory is very weak against Electric moves in comparison. * STAB Earthquake hits many common leads super effectively. I think these points makes him different from Skarmory. I agree that a C rank would make sense for him, as he is definately a viable option for OU.