Quote - Could we see all the renders please? 

I agree.

To be fair, and make a fair comparison, you should show all the renders you tested, as well as the kernels you used, and settings for the Octane renders and Firefly.

Octane can render in a slightly biased mode, which is more similar to Vue, if you set it in Direct Lighting kernel.  This will increase render speed dramatically, with little difference in the render results usually, if you use Direct Lighting/Diffuse mode.  If you use Direct Lighting/AO mode, then it will go even faster, but with the loss of bounced lighting, so it will be more like Firefly.

Using Octane in Path Tracing/Unbiased mode is the most accurate, but with proper settings, you could increase render speed 4 to 8 times what you achieve in Path Tracing kernel, using Direct Lighting/Diffuse, depending on how many diffuse bounces you set.  Also adjusting the glossy/reflection depth in Direct Lighting kernel (any mode) can help increase or decrease render time.

Clearly, you know Vue settings better than you do Octane, which also plays a role in achieving faster results.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

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