Is it possible you're having this experience because Safari just is ignoring a whole bunch of stuff (that makes the web-pages slow and cumbersome) because it's too outdated to understand?
Battery life it does have an advantage on, AFAIK this is widely understood and both Google and Mozilla are trying to address it (if they can, Apple does have nonpublic/undocumented APIs...). I'm surprised you find it outperforming Firefox wrt memory usage, though.
Battery life it does have an advantage on, AFAIK this is widely understood and both Google and Mozilla are trying to address it (if they can, Apple does have nonpublic/undocumented APIs...). I'm surprised you find it outperforming Firefox wrt memory usage, though.