EVOs are in the GTR league (ie: top shelf), not GTST standard (not offence to GTST owners).
But, that's stocks for stock - once you start modifying, the rules go out the window.
The GTST has more straight-line potential, but will never be the allround champ that the EVO is.
But, as was noted above, they are different cars, in different classes, that are intended for different purposes.