No, this is a different case
Probably his wondering if its legacy, native segwit or address format since bitcoin network has different format right. But still its only one network running in bitcoin.
Have you manage to retrieve it?
Not unless if the balance he found is a testnet bitcoin then provably that he cannot really transfer that funds to main network.
Also people all know that bitcoin is running in one network only so there's no way for him to transfer that if that is real bitcoin.
After reading through various comments on this topic i don't see any reason responding to op any longer because definitely there is something under the woman pants he wanna see

. Stop fooling yourself and you can't deceived people that knows more than you bro!
2010-2016 how come?
Still giving a benefit of the doubt in his case since maybe he legitimately confused about things he found. But at least he know that he can't fool people around.