Above poster is saying he got better temps with exhaust. Also the below video claims to get better temps using the Z39 cooler with exhaust fan. I know generally a cooler like this tends to do better with intake, but Z39 seems to be an exception according to the info I've found online.
Just to clarify I never tested noctua as intake. Another reason for me not to use intake is my dog. I noticed that intake drew dog hairs into the case so I figured I would be better off not using intake. Saying intake or exhaust is worse and not providing any info (so far the only comparison was mine and it’s not a good one) is just pointless. I think people should do their own tests and report back