I don't believe we have a realistic chance of winning the league unless we sign a player or two in January and that for me is no certainty in spite of the amount we paid for Ozil. Like you, I believe this season presents a fantastic opportunity to win it, but I remain unconvinced that we will capitalise on that (off the pitch).
I struggle to remember a side who have won the league with such poor options at Centre forward.....not least since Blackburn which was an entirely different footballing climate all together and with respect to Giroud, Alan Shearer he is not. Shearer made 42 league appearances and scored 34 league goals in that season which was incredible and not exactly something we can ask of or expect of any one player whilst staying injury free.
If you gave me Alan Shearer and couple guarantee me he would be fit for the entire season, then you yourself could be his back up for all I care and I'd put my liver on us winning the league.