Size asides, is Dark Green Nigra Arborvitea leaves and density similar to Emerla Green or more like Green Giant? I got a mixed info between the internet and my local nursery. At the nursery, Dark Green Arborvitea leaves and density is more like Green Giant however it’s supposed to be in the same family as the Emerald Green. Since I only get to see very young dark green arborvitae, I can’t tell what it’ll be like once it gets more mature. Please advise.