From the Composite Application wiki comes a nice document on Defining feature and match rules. The difference between this an other such documents is that this one actually has some examples to illustrate the difference between Perfect, Equivalent, Compatible and greaterOrEqual.
Eclipse match rules
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lekkim
Positive, competent, out-spoken, frank and customer focused architect and developer with a strong foundation in web, cloud and product development. I'm a strong advocate for API first and cloud based solutions and development. I have a knack for being able to communicate and present technically complicated matters in conference, customer and training settings. I've previously acted as team member and leader in a product organisation. View all posts by lekkim