The Aristocrats are definitely not Magic Finish. A Magic Finish deck has a distinct smell when you open it and it lasts for quite a while after it's been opened.
The biggest reason for the existence of Magic Finish, as I see it, is for decks that have "exceptional" properties to them - either a lot of ink or a metallic ink combined with a stock that doesn't handle it as well. Card performance takes a hit with enough of either, so Magic Finish compensates for that.
Some just plain like that it's more slick and apply it to a deck where it's not entirely needed because of its ink. Some prefer having just a little less slip between cards - a Magic Finish deck can be like holding a snake if you aren't careful - and use "Standard Finish". All other finishes are just Standard Finish under multiple brand names.