I think your intrepretion from the previews is valid. To me, it shows that M/K got there early along with B/C. But as Peach has pointed out, Brooke finishes and leaves. I suspect that Michael had a really hard time and all the other teams came and went, except for the "other" team, mentioned in the press release. I think production wants us to think it is B/C. It may very well be B/C there at the end....I just dont think so. I think this will be like Lena/Kristie at the haybales.