tbf EPQ moderators are absolute pedants. I'm sure you could get probably get a decent chance at an appeal judging by how ambiguous the mark schemes are, though I would say that detailed research and 'some research' would be predicated on whether you have done a source evaluation table and thoroughly analysed the credibility of sources as well as selecting a wide range of credible ones and synthesising relevant information. I'm sorry I have posted this so late as you have probably gone past this whole stage but I only just saw this as I've literally just handed mine in now.