Pampers Swaddlers is designed to be a more comfortable diaper for infants and really young babies and Pampers Swaddlers are made with a breathable backsheet, to provide a soft, blanket-like diaper.
Pampers Baby Dry are made to be more absorbent for both infants and older babies and toddlers.
Both Pampers Baby Dry and Pampers Swaddlers are good absorbent diapers but for infants they're usually more comfortable in the Pampers Swaddlers.