Jonny Howson gave his verdict after Boro's 1-0 defeat to Leeds United.
Mateusz Klich's goal on the brink of the break settled matters in the visitors' favour.
"In my opinion they are the best team in the league, and we gave it a good go," Howson said.
"Sometimes in these tight games the first goal can decide it, and the timing of it today can take the wind out of you.
"We just need a bit more quality to put our chances away.
"But we can't just turn up against Leeds at home, we need to be doing it week in, week out."
Watch the full interview with Jonny Howson in the video player above.