Different gateway cities to Tibet: Tibet Group Visa is only applicable to foreign tourists who travel from Kathmandu to Tibet. Other types of visas can be used to travel to Tibet through other major cities in mainland China.
Different number of people handled: a Tibet Group Visa is issued to at least 5 people and is applied by the local agencies; however, there is no such requirement for ordinary visas.
Different requirements for entry and exit China: tourists with a same Tibet Group Visa shall enter Tibet at the same time and exit China at the same time.
Different requirements on visa extension: the Tibet Group Visa cannot be extended. The ordinary Chinese visa is relatively flexible and can be extended.