I always had the feeling that all apps on Atlassian Marketplace were bad, until the day that I paid close attention and realized that the top rating is 4 star.
My brain - and I'm pretty sure that this applies to most people - is used to the 5-star rating system, which is used in 99.99% of the internet (ok I invented this statistic, but Atlassian Marketplace is the only place that I have ever seen using a 4-star system), so an app rated 3 star, for example, is good for the Atlassian Marketplace standards, but my brain automatically thinks it is just 'average', or when I see a 2 I think it is bad, when in reality it is average, something like that.
Any ideas why Atlassian keeps this system? I don't see the benefit.