Trust a chart from a company that's selling something or go with experience. I'll side with experience.

I believe all browsers are useless at protecting the user base. Not because they're poorly designed but because they have to be overly flexible for the multitudes of features, layouts, and other functions that the general populace throws upon them. The best tool for surfing online is your brain, followed by a backup defense of a good anti-virus and anti-malware as SLGrieb said.

By the way, the most vulnerable software, sites, and OS's tend to be the ones that are the most popular at the time. So the real weakness in any application is it being popular and accessible. Want to make a product safer from attack? Make a more popular one than it or renders it obsolete.