I alternate between sumo and conventional stance deadlifts. I normally train deads on my third workout of the week after I've done my dynamic movements (- day 1 is tall snatches, day 2 is cleans, day 3 is event training, day 4 is drop snatch/power snatch/ then squat+snatch grip push press then I deadlift). I alternate the stances I move the percentages around from week to week, workout to workout.
I've found that I can rep more sumo, but pull more (absolutely) conventional. However, that gap has narrowed this past year. I can still out rep with sumo and the absolute gap (estimated) has narrowed substantially. I write that off to getting into the dynamic speed movements.
don't know if that helps?
All the best,