Re: You don't need NAT for IPv6
If it does NAT it is, to all intents and purposes, a firewall.
But it is not a firewall.
It might be implemented by a firewall - that's how I do the NAT between two of my networks - but that doesn't make it a firewall; a firewall does many things besides NAT that may well not be implemented by a NAT box.
And as to latency, which do you think is quicker/less resource intensive
Neither. They're largely the same operation. You will not be able to measure any difference.
Vic.