virtually all wbs will improve with higher flow rates, but the micro channel have an effective upper limit due to the exponentially increasing flow resistance
the statement is not correct
the old MCW462-B was about a simple as a flat plate can be and it benefited from higher flow rates (
http://overclockers.com/articles688/index03.asp )
and the most modern have the same characteristics, look at pH's results
it remains a total mystery how or why the 'Europeans' (except the English and French) attempt to assert something contrary to known physics