That is just the contesting defectors .
There was another one , non-contesting defectors . IIRC BJP was better than AAP in thast .
Yes, but it only included minor numbers 2 vs 0 I think, but most defectors are also contesting. I was surprised to see so many BJP defectors, but also that AAP added so many of other parties, didn't expected that either.
In that kejriwal cant do anything in delhi ... without the help of central govt
That's more than questionable, but isn't important either, since that's an issue between both governments. For the voter all that counts is, what the party plans for Delhi and who will be the CM with what kind of power.
I saw a report today, where the interviewer asked BJP supporters why they want to vote for BJP and nearly all of them stated because of Modi, the last 7 month and positive signs of development, foreign relations... and that's the crazy part, since NONE of that has anything to do with the BJP or Bedi in the elections in Delhi now!
Voting for a party, no matter which one, for external reasons doesn't make any sense and is basically a wasted vote, because it doesn't has any meaning to the local problems, how they can be solved or how each party wants to solve it. And that's the least any voter should do, inform yourself about the possible parties and give your vote to the one that offers the most suitable solutions for Delhi!