There might be some truth to this. I use Firefox as my primary browser (despite everyone I talk to from my co-developers to my teenagers expressing shock that I don't use Chrome since "everyone" uses Chrome) because I use Firebug. I've tried using the Chrome developer tools a few times, but I'm so productive in Firebug from long years of use that I just can't get used to it. Maybe now I'll be forced to do so :-(