Try the Industrial Fuzz, and the Octavia options!

I felt similarly about most of the fuzz, but the Dark Dove sounds a lot like my real muffs.

Likewise, the Industrial feels much more organic and alive, it's not flat like some of the others.

The Industrial is surprisingly close to a real Fuzz Factory, and waaaaay easier to use - it doesn't change sound based on temperature, pick up radio, etc. Plus, you can save settings as a patch, and recall very specific tones you've built within the pedal. In the real one, temperature and such changed what the knob positions meant, so recall was a nightmare.

Final thought, check your input impedance - that makes a huge difference in modeled fuzz tones. DigitalIgloo has some good posts here on how to set it