From that the figure of 2128 is arrived at for the French 9to the beginning of June), which is consistent with Murray 9/39 to 6/40 and just about right also for Cornwell.
If the LW loss numbers you quoted from Cornwell, were all caused by the French, then they are about right; i.e. if the French don't cause any LW losses in June.
I haven't seen Murray's losses 9/39-6/40; but Murray's numbers for May-June have been posted a couple times, by both of us. From does figures it is apparent that the bulk of the LW losses you attribute to the French would have to have occurred prior to May, during the so-called Phoney war.