It's very unlikely that both of them will make mistakes while tagging as both of them are senior reputed Admins. And I am also not denying the fact that you have seen the loco which you have tagged.
But point is, that doesn't mean that this train gets the same loco everyday. Have you got my point? Only if you can show me some official information of this fixed loco allocation, then only I can discuss in TL Monitor group whether we can approve your TL entries or not. As per our current guideline, we can't add specific loco in a particular train. Sorry man.