Town endured an error-strewn display none more so than the mix-up between goalkeeper Jonas Lossl and Joe Lolley which led directly to Mark Noble’s opening goal.
But Wagner, whose team’s winless league run was extended to five matches, insisted this latest defeat carried no extra significance.
“No, absolutely not because for us, I think – and I’m not a stats freak, everybody knows – but I think always this season we were more or less five or six points above the relegation zone,” he said.
“So what changed? Nothing. Apart from the fact we have one game less now, but we are more or less for the whole season in and around this area.
“Nothing has surprised us in a negative way because from day one we were totally aware of what it’s about for us and that’s to fight for survival.
“I think the players have done this absolutely fantastically so far, even if we were below par and we will try to do better against Stoke.”
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Sunderland have been relegated to the third tier of English football for only the second time in the club's history after losing a dramatic relegation battle wi
Fernando Forestieri netted twice as Sheffield Wednesday eased to a 3-0 win over relegation-threatened Reading at Hillsborough.
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Wolves will take their place in the Premier League next season as Skybet Championship winners after thrashing Bolton 4-0 at the Macon Stadium.