I think we can all be a bit guilty of looking at things in a very black and white, Football Manager way of "Player A is better than Player B so we should sign Player A."
There are a lot of intangibles though in real life. One thing I keep thinking about is the character and energy of the squad. This group has been through a lot. Four successive summers of losing legendary players/captains. Increasingly demoralizing Champions League exits. Arteta leaving, who was very popular with the players. One big character and (formerly) very popular squad member now persona non grata and in potentially very serious legal trouble.
Maybe the mood and energy in the camp is a big factor when we're looking for additions. Perhaps someone like Phillips (as an example) is seen as the type of character that can come in and make a difference on that front, in a way that a young kid from Brazil or France may not be able to