Listen, either game, with the lack of forwards we have, would be a massive uphill battle. We're effectively going into a fight where our opponents have knuckle dusters and we have cushioned gloves.
But the reasoning some Arsenal fans have for preferring Real, is that sometimes, styles make fights. Atletico style is our kryptonite. We all see it, when we play teams like Newcastle. Our record the past couple of seasons is better vs the likes of Liverpool and City, than it is vs Newcastle.
So yeah, Real have all the history, and some of the world top players. However, they will give teams a chance, and that helps a bit when you are a team that doesn't create a lot anyway.
Also, if we are Set Piece FC currently, we probably have a better chance vs a Real defence than a Atletico one of nicking 1.
Theres also fans that just want the glamour and challenge of playing Real. There's not been many games between the 2 teams, with the last nearly 20 years ago, so it's not like Liverpool or City Vs Real where they have played each other a fair bit the last 5 years or so.
Lastly, with the likelihood that either team will knock Arsenal out. Id rather get put out by Mbappe, Vinicius et all than an absolute slug fest with Atletico.