The Seagulls were knocked off top spot in the Championship at the weekend after they went down 1-0 at big-spending Leicester.
Poyet said: "If you had told me our first defeat this season would have been against Leicester, I would have taken that.
"If you had asked me if we would have been at the top of the league before the Leicester game I would have taken that as well.
"Technically they were better than us. They have pace and strength up front so they are a difficult team to play against.
"You have to give credit to Leicester, but we were not at our best."