It's more than just that with offensive defensive. If you're chasing someone, you have more control over collisions than the other could ever. A person being chased shouldn't ever have to worry about stopping too fast or turning too quick. They're being chased. The entire responsibility for vdm when one party is choosing to follow close is the pursuing party. They should be setting up to take a shot but instead they choose to drive close for no reason I can possibly think of other than to collide.
The speed difference between those vehicles is an easy setup to pass and shoot the front window...so why instead choose to not only stay in the vehicle but drive so close even the slightest desync could cause issues? Every box was checked to create this accident to the degree that responsibility should fall on the persuer. I've seen people held responsible for their own desync because they were driving too close...and if that's happened, this is several degrees closer to responsibility for the same reasons.
I disagree with your call because though I feel your heart was in the right place, it sets up precedent to fuck over victims of stuff like this in the future.
At the very least if it's being handled like this in the future, no fault should always result in comp and not just because staff is in a good mood.