I agree with you. At the moment I don't see any chance of Chelsea winning this game. Although the bookies predict this will be an even match but one important note here is that Chelsea are very inconsistent and they often lose against average teams. Newcastle are in their best form and of course they have good statistics in the league this season.
I think the game is open to be won by either of Chelsea and Newcastle United. While Chelsea are knownn to be an inconsistent team and poor in front of goal; this season Newcastle United has also been inconsistent and injury ravaged which is enough reason to help gamblers understand its either any team wins or a draw ensues
Personally, i think Chelsea will win the tie, they are in good spirits and better form as well.