Because Daft Punk is much different than dubstep. They produce albums which is very different than most electronic artist do today (including dubstep artist). Meaning that the songs are part of a bigger piece of art. Dubstep djs put out tracks all the time without much thought or work. They rarely make a whole album. Also they have an original sound unlike dubstep which can often sound generic. I like dubstep when it is done tastefully and not just some skrillex replication.