User blog comment:Echonaut/What Mordekaiser Needs/@comment-5035765-20130717195907/@comment-4296199-20130717233731

but that reason isn't really enough these days. CC prevents him from fighting and the lack of CC makes it hard for him to contribute when he falls behind. The barrier and his ult makes it hard for him to have any adjustments, and these days even a little bit of mobility can change things for a champion.

Besides, saying that he can get items to allow him to CC isn't good enough when he needs gold to get those items. 4 of those 5 items are quite expensive, and while he can push naturally, it makes him extremely vulnerable to ganks. For the likes of other pushers, they have means of escaping ganks or having something to do other than push but Morde has a hard time doing both.