In the FAQ it says:
There are 3 types of armor in GW2: light, medium and heavy armor.
Light armor can be worn by scholar professions, medium armor by adventurer professions and heavy armor by soldier professions.
My question: Are there any in-game stat or protection value differences between light, medium and heavy armor or are the differences only cosmetic? Does heavy armor have more in-game "protection" value than medium armor and light armor?