It's normally Barcelona, historically, that's used to making big proclaims.
Johan Cruijff thought his Barça team was so much better than Milan, and made it well known before the final he lost 4 - 0 in 1994.
Same goes for Romario and other Barcelona players who proclaimed they'd already won that final.
The same goes for 2010, with the Remuntada spot, or how "Inter will regret being footballers at the Camp Nou".
We like to fly low.
I don't like mentioning these things, but if you tell me to GTFO, then I'll happily respond.
Barcelona the team, yes, not just their fan base, has the habit of sometimes talking too much.