I’m always a bit wary about StatCounter’s claims, but I would be very surprised if Chrome didn’t overtake Firefox at some point.
In the UK, Chrome bumped Firefox to the third place back in July 2011 (also according to StatCounter).
Indeed, the trends are crystal clear. StatCounter’s research arm, StatCounter Global Stats, reports that Chrome took 25.7 percent of the worldwide market last month (up from a mere 4.66 percent in November 2009) compared to Firefox’s 25.23 percent.