Eight of the Seagulls' promotion winners have started games in the Premier League this term despite a number of high profile arrivals.
Sidwell said: "They earned the right to get to the Premier League and fair play to him for giving them that chance. He believed in that squad.
"Then it comes down to players.
"The gaffer can only put them on the pitch and it's down to them to perform and they they certainly did that last year.
"It's that novelty and no fear where you go out and express your natural play.
"There were times when you could tell they were tense and nervous but the majority of time they took to it like a duck to a water, "On the whole they have all got to be pleased with themselves and I really fancy them this year to stay up as well."