Excepting that Kristina is a worthy finalist, is she the sort who might underestimate Simon and take her foot off the gas? My fear is that she might assume Simon to be a bit of a lightweight, and think she has this in the bag, even if she fails the final task - is she too professional to let this one go because of arrogance?
I can see Simon working extra hard to win, as he probably knows Kristina is a very strong rival, and that he has more to prove (it could be argued he got into the final by default with Katie declining the offer).
I can see Simon working extra hard to win, as he probably knows Kristina is a very strong rival, and that he has more to prove (it could be argued he got into the final by default with Katie declining the offer).