IMHO the only way to really have an accurate reading would be to tap a sensor into the chrage as it leaves the SC unit and before it enters the cylinder head runners. This of course would need to be a temp unit separate from the IAT and NOT used for tuning, just to measure the effectivness of the intercooler design.
Now take ANY of these and add the Super Chiller and it won't matter.
I have the utmost respect for each of these manufacturers as I have installed all with great results. Just different designs with pros & cons for all.