Steve Bruce urges Aston Villa stars to prove their worth
Tom Bradshaw's double and Adam Armstrong's first-half penalty won the game for the Tykes, who are just six points off the play-offs.
In contrast Villa, who have spent over £60million this season as they aimed for an immediate return to the Premier League, are 19 points adrift of the top six and just seven points above the relegation zone.
Steve Bruce refuses to rule out relegation scrap
Bruce has urged his players to justify their wages for the remaining 15 games of the season and admits a relegation scrap is not out of the question.
The Villa boss said: "The reason why we've got one of the biggest wage bills in the Championship is we've got to deal with that mentality and expectation. That's why they get paid more than anyone else in this division.
"I'm convinced they are made of the right stuff and can get better, and it's my responsibility to make them better.
"There's been big change at the club for too long. It's tough to come in here (the press conference), tough to do the television but that's what it is. But it's now time you show your balls.
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"It's the best and biggest club I've had in 20 years in management and arguably the toughest one to turn around. Given time I know for a fact I'll do it.
"It's difficult but that's when you show your mettle, roll your sleeves up, batten down the hatches and get ready to try and ride the storm – because there will be.
"Every man and his dog will have their say but I'm determined. I know what's required in this division, I've been around it long enough."
When asked if he was concerned about being dragged into a relegation scrap, Bruce added: "I don't fear that but you can't dismiss it."