The koolance 380 and Phobya through most users pump settings would be a performance tie. The "GPM flow chart" is actually an "unfair test" since to achieve equivalent flow in the more restrictive Phobya, you are actually adding more pumping power to that block than Koolance...nobody in real world sets their pump speed a notch or 2 higher on one block vs another to equal flow through a more restrictive block...the restriction is part of its performance.
while it may not be a fair comparison using overall flow, it does show what the block is capable of, at those flow rates. i use dual pumps in my set-up (dual PMP400's - with an option to add a third) so flow is more relevant to my set-up. but i do understand your point. even still, at a given set point the two are dead even (and, if i'm not mistaken, the phobya is considerably cheaper?) - yet the phobya was still not recommended - in fact, it didn't even receive an honorable mention (or any mention at all to be specific).....is this only because of the poor MX2 results?

side note: the Rasa and the HeatKiller also had similarly high deltas between IX and MX2 - i'm wondering if perhaps something in the design of the base leads to poor mounting with this particular mounting set-up? maybe they just need more pressure applied (since you limit the pressure to 40 ppsi for fairness)? as it stands now, i would consider them "outliers" rather than doing a lot of retesting to find out why they stand apart from the rest (3/18 is only 17%). anyway - thanks again for all your great work in testing all these blocks Stren - i certainly don't want you to think this is an "attack" on you or anything. just observations