Re: "Newtonian Acceleration" Advantage?
Yup. That's why beam weapons platforms -- like the Le Havre -- are getting the upper hand in the campaign, but there are still missile launchers around, hence the need for CIWS lasers.
And, as you say, the damade depends on the toughness of the missile. But a 12 DEF, 13 BODY anti-ship missile would still demand respect, right? The biggest spinal UV lasers around do something like 10d6K, AP, so if the missiles hit, they're well worth it.