Are all hospital mattress skins the same?

No, but that does not necessarily mean that one skin will produce better clinical results than another.
For example, mattress skin MVT rates typically range from low MVT of 200g/(m²∙24hr) to high MVT of 1200g/(m²∙24hr). However, no peer-reviewed studies document clinical outcomes that are better or worse with a higher MVT cover. Additionally, higher MVT fabrics break down faster due to decreased compatibility with disinfectants.^17,18

References