because Victor said that he promised his father (a good friend of his) to always watch out for him. Victor has known Daniel for years it was stated but if he was Nicholas, Victor would know that he’s not Daniel Jonas. Plus, the writers had Nicholas Alamain on the show at one point and he had an affair with Kate. I don’t think Victor would be too thrilled to learn that. It does make it possible that Nicholas would be around Jonas’ age but how old is Carly then? If Daniel is 35 (I’d say at least that age), Carly had him when she was about 16 would put her at 51. That is aging her but this is Days and they are known to age the kids and keep the parents young.