It is within any team to muster up the intensity needed to win a championship. Every team has the potential to perform at a high enough level to achieve the highest award of their sport. The O's are no exception. If they come into the series ready & willing to lay it all on the line, they just might bring home the hardware.
No, the O's cannot win the World Series, because they do not have strong enough resources to put into their teams. The teams in the East have seemingly unlimited amounts of money to put into their programs. The Yankees especially have no limit to what they can pay their players. This creates an uneven playing field and the O's cannot compete.