In fact, given Firefox's tiny market share (despite my efforts) I'm surprised the disparity isn't higher. Maybe it's harder to find Firefox exploits?
It's more likely that more popular browsers equally have more people attempting to crack them; and software in general is so buggy that results probably scale in proportion to the number of people looking.
Thats a valid point if we're referring to relatively unknown browsers. But the main three browsers are all high profile enough that they all have significant eyes on them and are thoroughly tested.
Firefox may have a small market share, but exploits for Firefox may even have more value to some entities/governments, due to its use in Tor Browser.
To clear any confusion, all three are extremely secure in comparison to other types of products (which is why exploits are so expensive), however Chrome just edges ahead, due to its sandboxing, and rapid patch cycle.
In fact, given Firefox's tiny market share (despite my efforts) I'm surprised the disparity isn't higher. Maybe it's harder to find Firefox exploits?
It's more likely that more popular browsers equally have more people attempting to crack them; and software in general is so buggy that results probably scale in proportion to the number of people looking.