Because they realize that if they try to keep up with Liverpool's game it will endanger themselves considering the conditions are not too possible for that so indeed the only way is to survive even though this result is quite surprising and indeed the reaction given by many people about this game is quite reasonable because it is clear this is outside of everyone's expectations but this is a match that indeed anything can happen.
With this result Liverpool are still in 3rd place in the standings, it's just that they can't get closer to Manchester City and Tottenham who will play today.
Chelsea are not really in form now but Tottenham Hotspur shouldn't be capitalize on that because Chelsea are unpredictable, take a look at them against arsenal they surprised almost everybody with the way they play. Tottenham Hotspur are in a very good condition now and they will like to have a continuity in their unbeaten since their are the only one standing in that position, this week game had changed so many, among the top five in the table only Manchester City escape the disaster of the week, Liverpool vs town drew, Arsenal are Aston villa loss now Tottenham Hotspur are the only left is either they join Manchester City or Liverpool or Arsenal and Aston villa, the choice is in their hands.