WW was out at time of JoeMac's comments and was specifically mentioned in that thread. Did he not know of that block either?
http://www.overclockers.com/articles876/
Bear with me here, but if the Aquajoe is slightly higher in its C/W vs head loss curve than the MC5002, then I would infer it would be a slightly worse performer than the WW at lowest (2lpm is not a typical wcer flow rate even with a 1048 pump btw) flow rates, and much worse when you get to typical low flow scenarios.
Who other than Bill produces C/W vs. Pressure drop graphs?
While you are pulling up definitions, please try obfuscation. To be clear, that is what I am accusing you of doing.