...looking at the 2 results side by side it looks like your shader is dependant on a low quality MSR to make the sparkles more pronounced. The higher quality setting is more detailed in number of sparkles but the sparkles are more subdued. If the shader is intentionally constructed in such a way that the effect is dependant on a particular render setting to work properly there's really not much to be done in the material room. Perhaps increasing the Specular value and tweaking the roughness in combination with a less dense noise pattern, or a different type such as Spots would work. Hard to say...