Fabian Huerzeler gave his Albion side high marks for a big pre-season win.
But he said there are still things to improve after a 5-1 success over Kashima Antlers.
A superb finish from Yankuba Minteh gave the Seagulls a narrow half-time lead.
They changed all ten outfield players at the break and increased their tally in whirlwind fashion though Jeremy Sarmiento, Yasin Ayari and an Amario Cozier-Duberry double.
Head coach Huerzeler said: “We are happy with the result.
“I think, even though it’s a test game, every win gives you self confidence.
“That is to the team or to the individual player if has a good performance.
“I think it was not everything perfect with how we played and how we defend.
“But what I saw was a team who suffered for each other, who show a togetherness on the pitch.
“When we lost the ball, everyone did counter-pressing, came as quickly as possible behind the ball.
“There were quite a lot of positive things.
“The (Antlers) goal at the end makes me a little bit not angry but disappointed, because I think a clean sheet is always good, especially for Jason (Steele).
“There are still things to improve and we will continue tomorrow.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here