Well, at least, PHPMyAdmin is the default tool installed through the host consoles and does not require as much technical training to find what you need while other tools can be faster with their query loads. Other tools may still require some technical knowledge for the people to use it. However, as per Stackoverflow, it's still suggested.
The most generated errors being found on Opencart forum originates from contributed programming. The increased post counters are caused by redundancies of the same solutions that were already provided prior.
Opencart.com Administrator / Quality Assurance Analyst / Programmer