Comparing Slanting V End Fed vs Inverted V Fan Dipole on 40m

Yesterday, I elevated two supports, S2 and S3 in the figure, of my end fed half wave antenna which had been mounted on a slanting V configuration, by about 3 feet. Earlier I had been able to work a station at over four thosand kilometers on 15m with this antenna. My 40/10m fan dipole in inverted V configuration has its apex at around 10m from ground while the highest point of the end fed antenna is only about 6m from ground. When I tested the end fed antenna I found that noise level on 40m was just S7 while it was S9 with half wave fan dipole. Initially I was very happy with the low noise floor. But happiness did not last long. When I tested transmission, I found that it was also inferior in transmission! End fed antenna had 10m HLF 200 cable while fan dipole had 15m RG 213 cable. I know that comparison is not absolute as EFHW is at lower height and using thinner cable. But length of cable is shorter for EFHW.