Despite the return of Biggar from international duty with Wales, Davies retained the No.10 jersey to land 16 points in a man-of-the-match performance.
And with Ospreys now four points ahead of reigning GUINNESS PRO12 champions Leinster in fifth place, the 21-year-old is confident his side are well placed going into the final four rounds.
"The boys put a good shift in - we had to work hard in the first half," he said.
"We had to go through our plans we'd spoken about all week, and that's what we did.
"Thankfully we got the bonus point, which is going to be huge come the end of the season.
"We didn't really speak about it, we spoke about just getting the win first, and seeing where we go from there.
"We know we've got the squad and the bench that can come on and get that bonus point, but thankfully we got it 10 minutes in the second half.
"If we win our games from now on we should be all right."
Click here to see the best images from Ospreys' victory over Zebre
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