Looks like there's a lot of confusion about "load testing" for batteries.
Real load testing is done via a device that not only draws current (heaps of it) but measures voltage AT THE SAME TIME.
The other form of "load testing" isn't load testing at all and is simply done by measuring voltages at the battery terminals. Those readings are transferred (or looked up) on a chart to give an estimate of state of charge which in turn is deciphered into CCA.
These types are voltage based "guesses/estimates" and are not load testers at all.
If you have a "really smart" voltage based meter, it'll use an internal processor to do the conversion for you and pop it onto the display as a xxxCCA figure. Impressive and clever stuff.
I suspect that the very precise quoted CCA figures mentioned earlier were obtained that way.
If its displayed on a readout (say LCD) then it must be correct is the philosophy.
The easy way to pick that a voltage based tester is being used is when the tester device asks for the battery type (L/Acid, AGM, GELL, Calcium etc).
It asks for the type of battery because there are variations in post terminal voltages of different types (calcium batteries up to 15v or so).
Inputting the battery type gives the base level voltage from which the relative voltage variations are measured. Tells the inbuilt processor which mathematical formula to use to deliver a CCA figure on the readout.
These are mickey mouse tupperware devices that lead to more confusion in an already confusing industry.
However, the current test doesn't give a rats about what type of battery the current is being drawn from to kick the starter over. As long as there's enough of it.
and that test is NOT a guess or estimate that the battery should be capable of turning the starter. The motor will either crank over or it wont.
If anybody goes to a dealer/mechanic to get a battery tested and he pulls out one of these technologically impressive jesus-boxes to do it, go somewhere else.
There are other real and effective genuine load tester brands around apart from Kincrome (and just as cheap).
If you happen to have one of these whizz-bang voltage based testers already, nod wisely and sneak off quietly to get a real tester.
Technology based progress is one thing but this sort of stuff doesn't do much to reduce confusion.
That's my view anyway.