Based on the data quoted here, it would take a very large amount of browsing after the initial load to cancel out the difference, which is often a difference of

Based on the data quoted here, it would take a very large amount of browsing after the initial load to cancel out the difference, which is often a difference of 50-100 times the SourceHut data. Having used BitBucket since 2013, I've seen their performance ebb over the years. The most recent redesign made the biggest difference. I left some comments in their beta period noting that the performance was painful in areas, and it did improve some by the time it hit release, but was still noticeably slower than it had been before the redesign. I would be interested in some sort of analysis of performance differences across web frameworks. Looking at BitBucket's code in the dev tools, they're using React + Redux currently. BackboneJS's web site lists BitBucket as using Backbone, so I would deduce the old, less slow design was the one that used Backbone. I've worked on both a snappy Backbone SPA and a lethargic AngularJS SPA, as well as in-between sites with Angular and React. But the business domains differ, so I don't have as apples-to-apples of a comparison as BitBucket's switch from Backbone to React would provide. It would be an interesting experiment to get several teams of developers with similar levels of experience in different frameworks - Angular, React, Backbone, Vue, JQuery, all implementing sites to the same business specifications, and compare the relative performance (in both features delivered and page responsiveness) a year or two in. Practical to perform that experiment, probably not, but I'd certainly read the results.