Both seal the Öberflächen so that they get a nice matte finish. Both water runs off wonderfully. With both a cleaner and with regular use in the cleaning water a special sealant (at least indoors) superfluous.
What something like better with at Sofix, is the smell. Both smell good and very discreet, but Sofix is a breath of fresh.
The disadvantage: On glossy tiles (with me in the bathroom) are available with Sofix more stripes and spots. Yes not give too much water into the plaster!