I'm hearing that we are a bit shaky in some outer boroughs. We may lose some Assembly seats as a result, but I think that Khan's numbers are good. Better than the party's? Maybe.
You can read into that what you will.
The key to a Khan win is the postal vote, for a variety of reasons. So, if you're in London and think you'll have trouble voting, get a postal. Ask if you need details of how to do it.