The most important thing is that it works without any problems, even in mobile browsers which are not supported by other tools like selenium or phantomjs etc., so I can use this tool with confidence to test my web applications across different devices/browsers! It's also very easy for beginners as well as experts to understand how things work here.
There needs more tutorials available online along with examples of code snippets. Otherwise there won't be much difference between using these two products because they both do almost similar jobs but have some differences when used separately. We were able to detect all our target platforms (mobile browser) together from one place instead of having separate files for each platform we wanted to check out.