I liked the part where he listed sniper and gunslinger as different classes and said to nerf them for different reasons.
Also, just because a marauder can't jump to snipers doesn't mean they'll win every time. In cases where they arent noticed, then yes the sniper will dominate the mara. But the Mara can just force camo up, maybe Los until entrench wears off, obusfucate and destroy the sniper.