Duskblade would be nice in lane because he can do about 75% of your hp with an auto r auto combo. Its also cheeper than infinity edge. So you can maybe even get it in time for a kill in lane.
Any two ad items are nice on draven if you are getting fed. It doesnt really matter if you have crit. You picked the right third item for fed draven as well, assuming the order reflects your build order. The other two items are fine as well. But what did Duskblade really give you outside of lane? You probably would have been better off building Mercurial in most games. It gives you more life steal and you can even bait yourself, especially with this build.
Ive also been experimenting with non-crit builds on draven. Its not the same, but its definitely a carry-able build if I know Ill get focused from the beginning of the game to the end. For a build like this, you want to emphasize the fact that you will survive long enough to deal dmg, rather than the fact that you will be dealing a lot of dmg (even though you will). You probably didnt win because of duskblade. If anything, it held you back.