Keep in mind that 100% collection won't happen either.
I've not bothered to figure out how much or what percentage of dust is captured, I just know that what collection there is, is a lot better than any other saw of this type I've used.
Short run, bigger hose helps but at the end of the day I still use the vac to suck up the escapees at the job site.
In the shop I'm still considering putting the saw on my main collection system if only to free up the vac for other tasks.