I would have thought epithermals are more focussed targets. But...

I would have thought epithermals are more focussed targets. But it is only one drill hole. There is a catch with the other 2 epithermals mined in the region at Peak Hill and Gidginbung in that they were both refractory and only the weathered portions could be processed.
Porphyries require a lot of holes to "discover" a deposit. Usually tens of holes required once you have a system. This was the case with Cadia, North Parkes, & Oyu Tolgi. This drilling will hopefully prove a system.
I suppose I am backing the quality of ARD's targets over their slow performance.