Two more reasons why this comparison is not on point: - On iOS, the FB App had to make do with a really slow JS engine at the time. IIRC Safari's JS performanc

Two more reasons why this comparison is not on point: - On iOS, the FB App had to make do with a really slow JS engine at the time. IIRC Safari's JS performance was x5 compared to JS performance in apps' web views? This has more to do with how iOS treats apps, rather than how fast web pages in Safari are or were. - The FB apps were okayish at the time, given that they were web based. If you manage to get your web app to that level, your site is ok. Now add to that the performance gains and browser optimizations of the last 4 years and you get a system that flies. Native apps are still faster and respond quicker to touch, but you cannot hold that against JS web apps.