I imagine he wins hard 1-5. And then Xin Zhao like to build health/armor anyway, so Darius's true damage isn't too much of an issue if Xin pulls ahead. But Xin has no escapes, so if he goes manmode to try and trade with Darius, and all of the sudden realizes he's going to lose the trade, he is pretty much screwed post-6. In reality, how does this matchup work? Only worth it if Xin gets a kill or more 1-5?
This is the part I'm curious about. How many items does Darius need for Xin to not be able to burst him. Or from the other side, how much of an item advantage does Xin need to be able to all-in reliably?