I’ll huff and I’ll puff..... =.=
First and foremost, did the Navy have the opportunity for a preemptive strike? Next, was the games presuming that there was no forward observation by recon units in both the air as well as assets on the ground in Iran?
Finally, it sounds like the Navy was trying to ascertain, based on current Iranian assets, what the result would be if Iran used those assets without retaliation. Sort of like fighting with your kid brother and letting him pummel you to see if the kid can give you a bloody nose.
Where I would have concern is going back a couple of years when a Chinese sub got within striking distance of a carrier group. I cannot imagine that the information gleaned by the Chinese wasn’t fed to Iran.