The whole inferior voice acting is just nostalgia.
Honestly the first MGS had Voice Acting over the top and the actors feel more real in Twin Snakes. Also people can't stand a few dialogues being changed.
I hated the VAing at first...but then realized I was being a victim of my own fanboyism.
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I think they meant Sniper Wolf is the best shot with the sniper rifle. Not to mention she won't play around with bullets...she just aims and takes the shot. BAM BAM you hit the ground.