An inaccurate pass by the Bayer Leverkusen attacker allowed Dimitris Salpingidis to break free on the right wing before crossing for Georgios Samaras, who poked home from close range to cancel out Philipp Lahm's opener.
"I agree that it was sloppy passing on my part that invited Greece to counter-attack," he told Goal.com at a press conference. "I gave away possession too easily, and it was annoying. I know that I gave away the ball too easily two or three times.
"We should have opened the scoring earlier than we did, but ultimately the 4-2 win was well-deserved. Except for that one very good counterattack, in which they scored, they didn't have many chances, really.
"We are aware of the strength of the team and the overall squad. The coach wanted some changes, and made them. I think it was visible to all that our performance level didn't drop, and that every player in the squad can be a valuable contributor to our team's performance.
"That is the advantage of our squad, that we have 23 players, all at a high level."
Schurrle then took time to praise coach Joachim Low, who unexpectedly gave him and Marco Reus a place in the starting line-up at the expense of seasoned internationals Lukas Podolski and Thomas Muller.
"He's a very good coach. We had the best possible preparation - he has an exact game plan, an exact philosophy. He doesn't leave anything to chance.
"Yesterday's line-up was very attack-oriented. But we always try to implement our own philosophy. It's just that most of us are offensive-minded, just look at our squad.
"I would prefer for us to have less time to prepare for the next game. The good thing is that we will have more time to regenerate, and maybe that will help us be more prepared to be fresher for the next match."