Hi Spalding
Unless you know how the style sounds on the original instrument, you will not be able to compare it with the instruments changed for VSTi.
If you supply one of your own styles to be converted, then you will have a direct comparison.
In addition you will need to take into account the fact that the way you edit a style could be totally different to someone else. (Just changing instruments in the style will not work unless you identify the type and style of VSTi you wish to be used)

Bill