There is a huge difference between a commercial space and your home, your business flooring has a higher volume of traffic. For this reason alone using tiles are a better choice. When you see shops, office suites or restaurants use wood, carpet, vinyl or laminate for their flooring they are aware that portions of the flooring will need to be replaced after years of use.
The clay used in manufacturing are different, as well as, the temperatures used to bake them. One of the biggest difference is how much water they absorb, this can be very important when selecting which one to install and where. Porcelain absorbs less than 0.5% and ceramic 1 – 3% water.