Truss has got this wrapped up. The Tories have got their eyes on the next GE, rather than just the leadership. Personally, I don't think UK voters will put an Asian man at their helm, no matter how good he is, compared to the opposition.
I was listening on the Radio earlier and apparently Sunak polls much better than Truss among the general voting public but Truss is much preferred by the members. Weird, as you would think they would have an eye on the General Election.