The Seagulls are flying at the business end of the season and Gross says the winning run is down to more than pure talent.
Gross said: “We always have talent but there is more needed than talent in the Premier League.
“You can see that on different occasions. You need talent plus mentality, plus togetherness, plus you really want to fight for each other.
“Someone is outplayed, the next one is there. You do a mistake, everybody sprints back to help his team-mate not look bad.
“We have this at the moment and we are really hard to beat, I feel.
“And then talented moments will come out always - but it doesn't work the other way around.
“It doesn't work that you want to show your talent without all the basics you bring to a football game and that's what we're doing, I think, really well at the moment.”