Now I just ridicule them whenever I encounter them for the modest number of tabs they boast of using. 12. 14. 21. If I've made it down to a mere 21 tabs, then I have almost nothing open anymore. (I know, I have a tab problem, but they're so very useful for retaining announcement and pages for followup in a place where I won't forget and lose them.)
They're advertising at "normal" browser use, presumably, but if PR campaign for a web browser really wanted to capture my attention with an ad campaign, it would boast of the ease with which it handles hundreds of tabs.