Here's the scenario: I'm hoping to find a brand sparkling new Miner's Haven Sweatshirt, instead of the old bland single-color ones. I search "Miner's Haven Sweatshirt" in the catalog and this comes up:
No good. These are all old single-color sweatshirts. I want a cool brand new galaxy-themed Miner's Haven Sweatshirt, so I guess I'll search "Miner's Haven Sweatshirt" under Recently Updated:
What? None of these shirts have the slightest to do with what I was searching for. I want to find the newest Miner's Haven Sweatshirts, but with the current sorts, this is impossible for me to do. Putting the search term into quotations doesn't help either. Ditto with Bestselling, Most Favorited and the other sorts.
When I'm searching for "Miner's Haven Sweatshirts" I don't want every single item of clothing that has "Miner", "Haven" or "Sweatshirt" or even "Sweat" in it. I want as close to a match as possible. But because all sorts except Relevance accept any keyword match (including keywords in the item's description - leading clothing creators to abuse keywords that have nothing to do with their shirt in the descriptions), I can't find the precious galaxy-themed sweatshirt I'm looking for.
tl;dr: sorts other than Relevance should still try to find exact matches, rather than accepting any distant similarity to what you're actually searching for.