Has anyone noticed that lately Safari renders websites faster?

I have been testing the cache on one of our sites. Been testing with Safari, Chrome, Firefox(Clean no addons) and FirefoxDeveloperEdition. The response time from the server is pretty much identical on all the browsers. But Safari is definitely quicker at rendering it out.

Anyone got a clue why? The only thing i suspect is that safari doesnt have dev tools enabled, so that might be the culprit?