Run time varies widely from person to person depending on vaping style. It's a really hard thing to nail down.
In terms of hit counts, I get about 350 hits off a charge with my 1400mAh box where my wife gets about 1200 hits off a charge. My wife and I use the same atomizer with the same resistance. I run mine around 18 Watts and she runs hers around 10 Watts. Should be about half, but the rest is down to vaping style.
Actually, the best way to gauge run time is with juice consumption. That's where the rubber hits the road in terms of how much work the battery is doing. I don't keep track of that so I can't say in those terms.
Elapsed time is probably the worst gauge of run time since that varies hugely from one person to the next even with the exact same equipment.