I do not know how conclusive the results are scientifically, but nevertheless, I found this quite interesting. One caveat, though. The machine used for the analysis was only able to analyse particles smaller than 0.6 mm, therefore cutting out the larger sizes. However, I still think that the results give an idea of the differences. To the results, then:
The graph from the Ascaso i2 conical burr grinder is a surprise. The grind is a lot less uniform than that of any of the flat burr grinders. Logic would tell me that this is a bad thing and hitting the targeted optimal grind would be more difficult. On the other hand, you might get in the ballpark more easily - i.e. the grinder would be more forgiving? This is just speculation and I may be off in my analysis. After all, aren't conical burrs supposed to be better due to the longer cutting surface of the burrs etc? Perhaps the wider particle size distribution would bring more complexity to the taste in the cup?. I hope to have an opportunity to try and actually taste the difference in the near future... ...it would also have been interesting to see the graph from a higher quality conical burr grinder for comparison...
Like I said, this was all in good fun and interesting, not a serious scientific experiment. I'd be interested in hearing any comments you may have, though. Oh, I'd also like to take this opportunity to thank Jesper, Michael and especially JP for making this happen.