Let me clarify, as I'm now more familiar with name of Lex's move, the Corp Charge.
At full screen, Lex was able to DASH between DS zoning, closing the distance.
This set up 3 options:
1. DS holds his ground, tries to continue to zone until he feels the pressure and retreats... setting up option 2.
2. DS retreats, continues to zone, but is now closer to the wall...this option forces the inevitable against the Lex player who is dashing properly...DS will eventually wind up cornered.
3. Either from a cornered position or from "Corps. Charge" rane, DS does his sword flip move, which is full combo punishable on block.
I watched all this happen live and in person LAST NIGHT.
I am not saying its easy... I'm just saying I saw it, I know it's possible, and when more people discover it and see it themselves, and learn to time it correctly, DS will be less of a problem for them... but it will take time.