hahahahaha
you are joking, right?
you fire one anti-ship missile and you expect the AEGIS system to find it difficult?
bloody hell, AEGIS is an anti-saturation system. you have to fire more missiles at the same time at it then it can counter. if you fire just one missile, the missile is being shot down moments after it is detected. whatever the missile type.
Well, AEGIS *could* be saturated since it uses 2 to 4 SPG-62 directors for terminal phase guidance. But for Tacticos/APAR/SMART-L, with the capability to guide 16 missiles in terminal phase, is a different story.
Aegis does not require illuminators for SM2 guidance, they are just preferred for various reasons.