It was the first win for West Coast over the Power at AAMI Stadium since round 11 of the 1998 season, and it has given the Eagles a perfect start to the new year.
"Obviously for us they're all important wins, but to come here and beat Port - it's been pretty tough for us," said Worsfold.
When comparing the match to games from recent years when the club was languishing near the foot of the AFL ladder, Worsfold made note of the change in mental strength among this year's playing list.
"The belief within the group is a lot stronger," he said.
"That belief in themselves that they are going to match it [with the opposition] and go out to win games."
"Even with LeCras out, we weren't a lesser chance. We still wanted to win."
Worsfold also praised the efforts of 208-game veteran Andrew Embley, who starred with a match-winning 32 possessions and four goals to lead the Eagles to victory.
"He's had an outstanding start to the season for us," said Worsfold.
"His leadership around the club has been outstanding this pre-season. He's taken it to a new level."
A 25-possession game for Daniel Kerr also pleased the coach.
"It was a good start from him today. His attitude about getting back to wanting to play his best footy has been great." said Worsfold.
"But he's a long way back from where we know he can get to. It will take a few weeks of him consistently playing at this level."
"There's no doubt that [over the next few weeks] we will see glimpses of what Daniel can do."
Despite the result, Worsfold said his young West Coast side still had plenty of work to do, with the Eagles registering 13 more scoring shots than the Power but only sealing the game late in the final term.
"They've certainly still got a lot to learn." said Worsfold.
"We probably had opportunities to be further in front at different times of the game. We can't give teams the chance to think they are still in the game."
Only after Embley's fourth major for the day, and a brilliant individual effort from youngster Luke Shuey in the dying minutes, was the game finally put beyond doubt.
"We had to win the game in the last few minutes; we didn't have it wrapped up anywhere before that," he said.
"We will keep working on it."
West Coast returns home to Patersons Stadium next week to face Sydney on Saturday night.
