Different fans mate, just looked, PA120SE has "TL-C12C" and the PS120SE has "TL-C12B V2" - as I remember seeing that mentioned in a review video that I was skeptical of when they claimed it was better, and despite the extra heatpipe I think there was 1.2C difference in the twosame fans, PS has 7 heatpipes vs PA 6
but temp differential is minimal (1-1.5c iirc)
delay the ramp set it at 0.5-0.7s vs the 0.1s which is the normal default
The reviewer said something along the lines of "it's still a gain/better/cooler! so they've done it again!" 
IIRC there wasn't a delay, it's just got PWM or DC mode and the at what temp = what % or RPM, in this case because PWM it was temp at %.
xoxox