Yeah, no doubt, if unadulterated realism is your aim, then Reality and Lux will get you further down that path, ultimately... since Lux is a more physically accurate type of render engine, fundamentally. But it needs to be mastered, like anything else. A better camera doesn't a professional photographer make...

...although the right equipment can help a lot!

I am always thrilled to see how much it is possible to crank out of Firefly though! ;-)

It's Firefly's versatility that keeps me very much addicted to it...