It will go faster than that.
I sailed my Futura 133 and NP V8 7.5 to these speeds below. The 122 would be faster again for sure.

Flat water in Caloundra
25 July 2008 2 sec 29.325Knots
31 Aug 2008 2 sec 27.431 knots
28 Sept 2008 2 sec 30.310 knots.
The fin was a Select 41 RS Viper 2008.
Not bad speeds for non race equipment.