He said: "We didn't man up, it is an individual thing, a mindset thing, and we have picked a side on our ability to front up, especially without the ball.
"Players haven't been picked and have been sent down to the Premiership because they didn't come up to standard.
"We are confident we have progressed from the last two seasons and the only way to start showing that is to win this game and win it well." said Davies
Cardiff Blues are set to ring the changes ahead of their trip to Leinster with Welsh internationals Deiniol Jones and Sam Warburton given their starting births having been on the bench last weekend.
Tom Davies also comes into the Blues' pack with the only change to the back line being Dafydd Hewitt's recall in place of Welsh wing Tom Shanklin.
Kiwi back-row forward Michael Paterson will make his debut for the Blues as they look to build on their positive start to the season.
Ospreys Director of Coaching, Scott Johnson is expecting a tough test when his side welcome Treviso to the Liberty Stadium fresh off the back of their remarkable result against the Scarlets.
He said: "The result against the Scarlets sent out a clear message, but one thing's for certain, we were well aware of the threat before that game, and we will be approaching the game in exactly the same way we would any other, don't worry about that one, we expect a very physical encounter."
The Ospreys make two changes to the side that lost narrowly to Ulster on the opening day of the season bringing in Welsh international stars Shane Williams and Lee Byrne for Richard Fussell and Sonny Parker who miss out.