What, specifically, do you consider inferior about Safari? I'm genuinely curious - I use Chrome, Firefox and Safari regularly and I find Chrome and Safari to be of equal quality. And I notice bugs in Chrome every now and then, but with both browsers I find it pretty rare these days.
Well, as a for-example, safari's support for indexeddb, service workers, push notifications, and just about everything that makes progressive web apps interesting is pretty lacking.
As another for-example, I was able to hard-crash safari on ios by setting some CSS attributes on the scroll track about eight months ago - like literally a web page with css that altered how wide the scroll bar track was could CTD safari on ios.
As another for-example, KeyboardEvent.key isn't supported in safari.
As another for-example, http://caniuse.com/#compare=chrome+51,safari+9.1,ios_saf+9.3 and scroll down. Battery Status API, Fetch API, Proxy Objects, Shared Web Workers, on and on. The "modern" web as a good platform for interesting progressive apps is passing safari, in particular iOS users, by.
One assumes a motivator here is the app store: apple's walled garden approach is fundamentally incompatible with web apps gaining all these APIs, whereas android's (relative) openness means Google is less uptight about people deploying apps without going through the app store approval process.
My view is that Safari is leading in privacy and lags in everything else. Meanwhile Chrome absolutely leads in security while Firefox leads in standard support.
I use Chrome for work and Safari for casual browsing. Safari definitely has better tab management (tab expose). I am also sad that Firefox UI looks stale. Their settings & options window look like it hasn't changed since initial release.
