[revive]

It's not an easy task.... But in general these sampled/synthesized sounds are sufficient for most keyboard applications.

It's very unlikely that keyboardists would attempt to create a solo fingerstyle piece using sampled guitar sounds. If used for this purpose, off course one would find the sampled/synthesized sound lacking.

But if used to add guitar sounds to a full-band mix, the sampled/synthesized sound (if done correctly) may be good enough in most cases. Having said this, real guitar sound is always better than the 'fake' one, off course.

Speaking from my experience as a lifelong keyboardist...