I am booked on flight no QR813?

I have been looking at several airline seat websites ( seatguru,seatmeastro,seatexpert) and by those,my seat ( 2E) which is onboard a A330-202 ( 238 pax) is in First Cl even though I have booked Business Cl.Does this mean that I will be travelling First Cl as part of the trip ( second trip is on the B777-300ER with Qatar Business Cl to LHR (QR011).The date in question is the 16th of May