Should Prestige Skins be in their own skin Tier?

Right now, Prestige Skins are classed as Mythic Skins which doesn't seem right because players obtain them through a whole different system (namely, Event Tokens and Prestige Points). On the one hand you have Gemstone Mythic Skins that you might get 1 or 2 of in the course of a Season (depending on how much money you spend on the game). On the other hand, Prestige Point/Event Token Mythic Skins come down to how much you want that skin. If I want 'Firecracker Vayne Prestige Edition', for example, it's simply a matter of me purchasing the Lunar Revel Pass and committing to grinding out games for a month (realistically only 5-7 per day between the pass and event mission rewards).

TL;DR - The skins are probably of very similar value, quality, and rarity. However, I believe that the difference in the nature of obtaining them is different enough to warrant them giving them their own skin tier.

You earn Gemstones as a byproduct of using the Loot System, whereas you can actively earn Prestige Skins that are released as part of Events.