I looked back and found the answer... CX should not use the ETHER pads, you get a 6K spike and it borks the upper midrange.
Comparing the two CX is smoother in the midrange while C Flow has more bass power, lower distortion, throws a deeper soundstage, and is more revealing. Both handle EQ with ease, C Flow needs a little more up top while CX needs more below.
Oratory's measured response for C Flow looks pretty much like what I'd post and he got a near ruler flat response with the PEQ so go there if you want to see vs the CX data Amir has posted.
One thing that is fun with ETHER C Flow is THD, which is even lower than CX. Here're two plots, brown is the CX at 104dB at 1Khz. This maps pretty well to Amir.
ETHER CX THD, 104dB @1Khz
View attachment 138982
ETHER CX THD, 104dB @1Khz
View attachment 138981
The lower THD is the Flow tech working, though as you see it was improving on something that was already pretty good...
Anyhow, stick with the CX pads on the CX and if you want to fiddle with the sound use the tuning inserts or EQ.