England goalkeeper Karen Bardsley has praised the USA for their ruthless performance against Thailand, which saw them get their World Cup defence off the mark with a record-breaking 13-0 win.
Star striker Alex Morgan scored five goals in what was the biggest win in the history of the Women's World Cup.
Asked for her thoughts on whether the game had been a good or bad advert for women's football, California-born Bardsley said: "I think in terms of the ruthlessness, fair play. You want to score goals, everyone wants to score in a World Cup. I'm not going to knock them for doing that.
"I do think that the two teams that played yesterday, there's just a massive disparity between the two. You have to look at where Thailand are in their development, at their history and where they are in terms of how long people have been playing, are they professional, how many players are playing abroad, and you look at the US team and how long they have been playing professionally and their history.
"There's no way there can be parity between the two.
"In terms of ruthlessness, I wouldn't expect anything less from the US, just to bang in goals.
"And, if anything, if I'm going to be honest it's probably a good thing that it happened because now we understand there needs to be an improvement here, or perhaps the Thai federation will invest a bit more to grow the team. That's the way I choose to look at it, as an opportunity to do better."
England's next World Cup game is on Friday where they will take on an Argentina side who are ranked 37th in the world, three places below Thailand.
Bardsley emphasised there is no danger of England underestimating Argentina ahead of that Group D clash in Le Havre after the South Americans held 2015 runners-up Japan to a 0-0 draw in their campaign opener on Monday.
Bardsley said: "I think everyone in this tournament is here on merit and we definitely do not underestimate any team.
"I think we're very much prepared for anything that could happen. We have to treat it as if we are going to play a top nation. We have to be extremely respectful of what could potentially happen.
"They have a striker who used to play for Lyon (Sole Jaimes). By far, we can't underestimate these players.
"There's no doubt they are a good team, especially when you can keep a team like Japan at 0-0."