SPO-15 is way worst then it should be.

[LaCiKa]

First i want to point out that this is from Serbian pilots reports during interview after they have been shot at or shot down by USAF F-15C's mainly using 120B in Operation Allied Force in 1999.

During first day of operation 24.03.1999

Pilot Nebojsa Nikolic had proper RWR warning that he is being locked and missile warning. Survived 3 fireballs from missiles. 

Pilot Predrag Milutinovic had two times lock warnings and missile warning. Later was locked from firendly KUB which he also had lock warning but no missile launch indication and that way got shot down in final landing aproach.

26.03.

Pilots Slobodan Peric and Zoran Radosavljevic in their formation flight towards 2 pairs of F-15C's, only Zoran had SPO warning that they are being locked from their 2 o'clock, it is unknow if his radar was functional or not, but Slobodan's radar was malfunctioned and SPO also he is the one who survived to tell us that he only has seen 4 white missile trails and gave command to Zoran to defend also. 

07.04.

Pilot Boro Zoraja after take off had SPO go crazy in his headset, giving him missile warnings from 2 o'clock, he took off with radar enabled, managed to dodge first missiles, re committed to enemy, had one of targets locked at 30km after his SPO went crazy on him giving him missile warnings again but from 12 o'clock while hold target locked. This was in fact longest flight of Serbian AF during this operation and it lasted 40 minutes, his oponents were 3 F-15C.

08.04.

Pilot Dragan Milenkovic almost same story as of Boro's but had two times missile warnings and lock on from his nose while having radar in search mode.

So my personal option is that SPO-15 IRL is not this much bad as is now on MiG29A.

Here is video from their story's.