My conventional atm is 195 but my sumo is 210 in training. Even though I have shortish arms go figure.
The thing with sumo is it requires a lot more mobility than conventional especially in the hips so many will not try it out for a long period and dont follow through a full training cycle.
Also pulling wide sumo and squatting wide also fries out your hips eventually from what ive seen and experienced.
I have moved in the squat stance and also pull conventional every few weeks to keep the back strong and the hips healthy.