I took long enough puzzling over the ID that someone else got another id in in advance of me. I would have thought that perhaps his knowledgeable badge would have trumped me, but it didn't.
The number of badges you have (both 5) can hide a lot of variation in the underlying reputation. So quite possibly you just have a sufficiently higher reputation than them even including the 'knowledgeable' badge that your ID gets to win.
Received points mean prizesLVTG 12824 Alex 40455 icons rates the same as KnowledgeableSometimes though iSpot gets most things wrong, not this time..
The case of the Dab, https://www.ispotnature.org/communities/uk-and-ireland/view/observation/128324/dab where 8 people couldn't overturn 1 expert, reminds me that nothing seems to have been done about fixing reputation errors as pointed out in oct'17, eg"I switched my agreement in https://www.ispotnature.org/communities/southern-africa/view/observation/666303/tiny-blue-crabs2 away from Tony's ID only because miked asked for examples where a lesser reputation has trumped a greater."But if the Dab isn't a reputation error it shows we've no longer any fish expert.