... sounds like 6 of 7 were recovered - with 1 lost - I think that's what I got out of that ...
I will agree about the difference in the blood trail, although that's not a gimme' on deer either - many factors can be brought into this - shot timing, shot placement, broadheads, to name just a few ...
... it's possible that the same could be said about certain hunters with firearms - seems almost impossible to not drop a bird with a shotgun; but we all know it happens, & it's usually not the weapons fault ...
...
to each his own ...