Technically no, but the thing is as Darius I offer things to the team that I don't offer as Morde, with Darius I carry a bit of CC (my slow on my W and my pull on my E), and sometimes I need to bring it because my teammates tend to be unreliable with timing their cc just right (like stopping Vel'Koz or Katarina while they are channeling their ults with a stun or displacement) or just using it period.
It's sort of the scenario where I have to carry more burdens for the team overall to make things easier on them. I could go as Morde and smash faces, but without any cc or mobility outside of my conditional W or building Rylai's first, I would have to rely on my teammates to land cc during teamfights so I can smash faces, Morde in his current state has a problem where people can just... walk away from him.
I could go on but I'm sure Mal (Malicious Metal) could explain things much better than I, when he gets around to making another Morde thread, probably when the meme spieling dies down a bit.