Ortega being a big name in general is confusing to me, but he's undeniably a more well known name than Movsar evloev. If you think Aljo of all people is scared of a predominant wrestler, then you are crazy. Nobody is scared of a guy that can't finish a sandwich. It's about the name and the clout, as it often is in the UFC, and Movsar doesn't have much of that.
Mind you, Sterling often says one thing, then ends up doing what the UFC wants. I wouldn't be surprised if this fight is official within a month.