PvP Recipes and how they drop

I understand that PvP recipes only drop from player character defeats when that defeat is reputation-eligible and that there is a 5 minute timer between reputation-eligible defeats for the same player character.

My question is on the topic of reputation-eligible defeats. How is this determined? I assume there is a level gap involved. Does the character have to be within a certain number of levels? If so, how does this apply when entering a PvP zone or Arena match where the players are exemplared down where there is no level gap? For example, if a level 35 and level 50 character go to Warburg, the level 50 character is auto-exemplared down to 38. Does this mean they are now a reputation-eligible defeat since they are exemplared down to 38? Or does their actual level of 50 still apply and any defeats on them are not eligible?

I did a search on ParagonWiki, but I assume my search-fu is terribly weak because I know this info has to be there but I could not find it. Thank you in advance for any help you can provide.

Got it, thanks Phillygirl. In the situation above where one is exemplared down to the zone level, at what level would a PvP IO drop? Would it be the exemplar level, i.e. 38? Or would it be the characters' true level of 50?

I believe it is based on the "true" level of the toon that gets the drop. I've only ever got level 50 pvp recipes from warburg pvp kills when playing there with my 50's exemp'd down to 38. So if you are using 50's...then you will get level 50 recipes dropping for you.

It's a lv 50 recipe

Thanks Captain and Phillygirl!