The dynamics of the premier league title race are changing, from when it was traditionally a two year race and the rest where always at a safe distance, its now a much closer race and I expect this to be the case more frequently, as City, Chelsea & Utd all have the power to make sure they are challenging, then you have the goons, Liverpool and outsiders like ourselves who could make more progress depending on how the club changes next year and forward from there, but we have big strides to make before we could even think about a challenge.
But as for Liverpool winning, no one has said they will win the title, but what Liverpool do, are completely annihilate teams and score at will, so if they manage to keep Suarez and make key signings then they will be challenging and have another exciting season and challenging for the title (even as an outsider) is a much healthier position then challenging for top four but ending up 5th and in the Europa league.
Plus its much healthier for the league overall to see a close race, even if City and Chelsea will likely break away in the remaining games. Its same happening in Spain with Athletico Madrid, they are challenging and while they also unlikely to win, they are having an exciting season, rather then the usual bore fest of a league between Barca and Madrid.