And yet when new players join us, they talk about the winning mentality the club have, they talk about the club are always challenging and winning trophies etc. If the Premier League and Champions League are the be-all and end-all, am sure they would not have said that and/or would not be so keen to join us considering we do not always challenge for the league title or Champions League every season. The consistent winning culture, fostered by winning domestic cups as well as the Premier League and European trophies, has been one of the main attractions for players over the years.
The difference between us and Arsenal is that we always have been in a better position than them to make it count and consistently win things, even when we have average seasons etc. And this is all the more relevant now considering what we are building for the future. A win here would give them a big confidence boost.
I can assure you that this has nothing to do with being English. It is the fact that we are in a proper cup competition and that there is a major (domestic) trophy waiting to be won. Go ask fans on social media and am sure you will see many non-English fans are keen to win the FA Cup as well as the English ones.