Just looking at the numbers right now...

Still in the game:
3 Tandang (Skupin, Abi, Lisa)
1 Matsing-Tandang (Malcolm)
1 Matsing-Kalabaw (Denise)

On the jury:
3 former Kalabaw (Kent, Penner, Carter)
3 former Tandang (RC, Pete, Artis)

So if Denise is in the final 3 but Malcolm isn't, we have a jury with 4 original Tandangs, 3 original Kalabaws and 1 original Matsing. Denise would theoretically have an advantage there because any two of Skupin/Lisa/Abi could split the Tandang votes while Denise gets at least three of the other four (except possibly Carter). Artis will not vote for Skupin under any circumstances and possibly Pete too, based on their exit interviews.

Who knows how Carter will feel about someone who called him like a son but still voted him out, and ditto for Penner who had Skupin/Lisa reject his pleas. I believe these rejections counter any argument that might be made against Denise if she should choose to go against Malcolm at F4 as I believe will happen. She could justify the Malcolm vote by saying it's a her-or-him situation as Skupin/Lisa were clearly voting together and she had to go with the safe approach to get herself to the end.

F3 matchups (in my view):

Skupin-Lisa-Abi = Skupin wins
Skupin-Lisa-Denise = Denise wins
Skupin-Lisa-Malcolm = Malcolm wins
Skupin-Abi-Malcolm = Malcolm wins
Skupin-Abi-Denise = Denise wins
Skupin-Denise-Malcolm = Malcolm wins
Lisa-Abi-Denise = Denise wins
Lisa-Abi-Malcolm = Malcolm wins
Lisa-Denise-Malcolm = Malcolm wins
Abi-Denise-Malcolm = Malcolm wins