The Power put in a committed performance to topple Essendon in round one, but were well beaten around the contests on Sunday and appeared to falter under West Coast's pressure.
The hefty loss has attracted some strong criticism from the wider football community, but Chaplin said it was important to put the loss into perspective.
"It's round two – I don't think you can be too big-headed after one game of football and I'm not sure if you can make that judgement," he said of the criticism.
"It's not like we didn't turn up to play football. We wanted to get out there and win, but West Coast put too much pressure on us and we turned the footy over, so to say that is a little bit harsh.
"Even though it's only round two, it (the media is talking) almost like we're in crisis talks already. We're 1-1 and 10th on the ladder.
"It's only early in the season' it's a bit hard to say, 'Your season is over and you're getting ahead of yourself'."
The inaccurate Power managed just 1.6 in the opening term and will spend more time practising their goalkicking this week as a result.
Coach Mark Williams did his best to ignite his charges with a heated address at each of the changes on Sunday, but nothing appeared to work.
Chaplin put the poor performance down to a lack of intensity.
"We didn't go over there (to Subiaco) big-headed like people think we did. West Coast is a good side and it was their first game at home, so they wanted to win, like we did round one against Essendon," Chaplin said.
"We didn't go in hard enough and they beat us in that area. It's amazing what happens in this day and age in footy. If you can put pressure on the opposition, it's amazing how much they turn the ball over and if you can score off it like West Coast did you're on your way to a win."
Williams watched and even operated the club video camera from the stands during Wednesday's training session. He then showed the players his handiwork with a video presentation during the post-training meeting.
Kane Cornes, Peter Burgoyne and Jacob Surjan all had light sessions as part of their training workloads.
Dean Brogan will return to the side after serving his one-match suspension and Daniel Motlop is free to play his 100th game after being cleared of a striking charge.
Chaplin said Motlop's milestone game would give the team a chance to redeem itself after failing to deliver in Chad Cornes' 200th, Shaun Burgoyne's 150th and Brett Ebert and Toby Thurstans' 100th last week.
"Last week, was really disappointing because we had four guys playing milestones, who have been great for the club," he said.
"To not get the win for them was disappointing because that's something we pride ourselves on, winning those milestone games."
Chaplin said the players were embarrassed about the loss and expected a strong response against Melbourne at AAMI Stadium on Sunday.
"Melbourne struggled last year, but at the start of the games against Collingwood and North Melbourne, they were right up with them until half time," he said.
"They're not going to be a walk in the park this week. We've got to make sure we come out, give 100 per cent effort and bring the intensity we lacked on the weekend."
