Outlet stores carry an assumption of guaranteed savings that isn't always accurate - many outlet items are manufactured specifically for the outlet channel, not simply discounted overstock from regular retail stores.
A tag reading the same brand name doesn't guarantee the same materials or construction as the equivalent full-price item - many brands produce a separate, lower-cost line specifically for outlet distribution.
A listed original price used to calculate the discount percentage isn't always a price the item was ever actually sold at in a regular store - this inflated comparison price makes the discount look larger than the real savings.
Genuine overstock and last-season regular-line items do show up at outlets, especially for categories with real inventory turnover pressure. Knowing which items are outlet-exclusive versus genuine surplus helps separate real deals from manufactured ones.