Honestly, guitar vst plugins are terrible. These plugins you are using are no exception.
I've never heard any guitar vst that sounded even close to the real deal. You just can't get the sound of a guitar (especially electric) and solid state, tube or hybrid amp through computers. Plus, for rock music, you just can't get the same stereo effect of having a double tracked, panned rhythm guitar and that is one of the most important elements of a killer rhythm tone.
That's my two cents on guitar plugins.