I feel like Bucky addressed your argument squarely and convincingly.
You say the damage is low, they show that it is higher than other comparable units.
You say it's low for cost, they show it's marginally higher than comparable units when adjusted for cost.
Is there any evidence he could possibly produce that could change your mind? It doesn't get much clearer than what they've given you but you down-vote their efforts without addressing what they've said.