While the Power targeted star on-baller Daniel Kerr with their run-with specialists Kane Cornes and Josh Carr, West Coast dismantled the Power with a disciplined midfield zone in the 50-point win.
Stenglein, who often plays a run-with role himself, said the game had changed and taggers were no longer required every week.
"The way the game's going, it's just going to be a bit harder to play those tagging type roles," he said from Subiaco Oval on Monday.
"Occasionally games will come up where they (tags) happen, but I think the majority of the time that will ease its way out of the game.
"It's more of a team defensive role."
Port entered the round two clash boasting three of the game's elite taggers in Cornes, Carr and captain Domenic Cassisi.
But West Coast midfielders Adam Selwood (33 possessions), Matt Rosa (26) and Kerr (28 and four goals) dominated the match, suggesting a victory for rolling zones over one-on-one football.
Stenglein said he would have up to five opponents a match now, with midfield zones taking hold.
As a result, he said taggers such as Selwood and himself would need to develop an attacking side to their games.
"In the past he (Selwood) has had to have a lot of negating roles. Now he's coming into his own and [playing] a bit more of a midfield role," Stenglein said.
"Adam's going to adapt with that and find more of the ball and be a damaging player for us."
The Eagles take on St Kilda this Saturday in Stenglein's 200th game and the 28-year-old said they would use the same high-pressure approach against the unbeaten Saints.
He said there was confidence and belief among the group and, with a number of key players returning from injury, the side was well placed to improve on its 2008 record of four wins.
"It's really good to get [that] core group of guys back, especially those guys that are not young players but guys that have missed a lot of footy – like Matt Rosa and Shannon Hurn," Stenglein said.
