Mythbusters busted this a LONG time ago
Sloan FLUSHMATE Toilets by Brand
In response to their customer needs, Sloan FLUSHMATE Toilets have been designed with continuous improvements to be the most reliable, consistent, and trouble-free toilets available.
FLUSHMATE uses pressure instead of gravity, creating the strongest flushing action on the market today.
Pressure Assist Toilets have fewer moving parts resulting in fewer servicing needs. When compared flush by flush with other leading brands, FLUSHMATE Toilets are the clear choice.
Toilets with a FLUSHMATE Inside Perform Better, and are the Preferred Choice of Today’s Consumer!