It means their GUINNESS PRO12 season opener at home to bottom-of-the-table Zebre is their only victory of the campaign, although they have picked up four bonus points from their five games so far.
And Wilson believes the Blues' performances have been better than the results suggested.
"We've gone close in all four games. We lost two games by [within] seven points, against Ulster and Connacht, and two games by eight points, against Munster and Leinster," Wilson told the Blues website.
"To be losing by seven or eight points consistently out here against the Irish provinces, in this current period, is something we have to look to build on.
"It's not a positive in that we are not happy losing games. We were hoping to get at least one win out of these games and we haven't achieved that.
"But what we can do is now build on the performances over in Ireland and the attitude the players have shown."
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