Is Sett bad?

Am I ass or is this champ just a worse Darius in every aspect except for engage? Considering how immobile he is and his inability to seriously take Stormraider's his sticking power is bad. He is easily short traded by anyone with movespeed/cc and his sustain only keeps him around lower hp thresholds in the early where he can still be bursted quickly. His damage is also entirely physical except centre W so tabis hard fuck him considering his reliance on autos for damage. He wants to use W to make favourable trades but anyone with a brain will fight outside of minions if they need to dodge it or just play around the decay timer. I main Darius but everytime he is banned and I'm on Sett or try picking him for fun it feels so shit if I don't have counterpick. He has way less pressure/opportunity to abuse unless the opponent allows for it to happen, and I'm trying to force fights/diving early levels. I honestly think they need to buff his early damage slightly on his E/Q so he can take ghost without losing significant kill pressure or improve his sustain a bit.