Bony's first season in English football since making a £12million move from Vitesse has proved a stop-start affair as Laudrup has tried to ease him into the demands of the Premier League.
The 25-year-old has taken part in extra training sessions but his manager had been reluctant to give him a run of games in the starting line-up.
But Bony's all-round performance and superb brace in Wednesday's 3-2 defeat to Manchester City, which took him to 12 goals for the season, was his best yet in a Swansea shirt and suggests he is ready to light up the top flight.
And captain Williams feels it is vital Bony gets the chance to start again when the Swans look to capitalise on Manchester United's recent travails at Old Trafford in Sunday's FA Cup third-round tie.
Williams said: "That was the best he has played. I am pleased for him and that is the main positive we can take from the City game.
"Hopefully he will keep his place in the team and he can have that confidence of knowing he is needed and he is wanted and we can build our game around him.
"You could see his quality in the games he has played even if he had not hit that level yet. It's something we have lacked over the last few years, a bit more of a presence and you saw his strength and finishing against City.
"He is a strong boy, his movement is good and he has that appetite to score goals.
"My main hope with Wilfried is he gets another chance, sometimes strikers need to know that they are going to play and they are wanted and are a big part of the team and hopefully he will stick in the team now.
"Even if he doesn't score he needs to play most of the time."
Bony's goals could have earned Swansea at least a share of the spoils against City, had it not been for conceding three poor goals.
Fernandinho and Yaya Toure's strikes came from a failure to clear balls in the box, while Aleksandar Kolarov was given the freedom of the Swansea half to drive forward and score City's third.
Williams knows an improvement is needed if Swansea are to get a result at Old Trafford.
He said: "We have done well in games, given it a go but come away without a result.
"I think if we look at the last six games and analyse all the goals we have given away far too many, they have been pathetic goals really.
"That goes for all of us, we could have done better as a team.
"You cannot give away three goals against a side like Manchester City and expect to get anything out of the game.
"I don't know what it is down to but it is something we have got to work on in training."