Hey advance thanks for all the help

Last Saturday I was riding along Derry rd eastbound towards airport road. Road turns to a 50 and I got caught doing 72. I was beside and behind a blue versa going the same speed even a bit faster. But he decided to pull the guy on the sport bike over.

Anyways I wanted to know if I can say I was following the flow of traffic. The cop told me I should maintain my own speed when I told him I was following the versas speed. He reduced it to a 15 over with no demerits.

Do I have a case?
Also I heard that it doesn't matter if there a no demerits but my insurance will still go up. I am fighting it regardless because at least I can postpone the payment.