All of those died, including Lambert, in vain. Sam Fisher's cover will be blown anyways. The only benefit from choosing any JBA choice just gives Sam more ammunition and gadgets to use. If you're playing on Elite, you will get nothing out of it.
I only uploaded parts where the choices are made, and the changes that happen in the game. While the cutscene did not change for the final mission, I uploaded it anyways to show that Lambert's death changes nothing. Emile's files on JBA HQ Part 1 seems to be the same regardless of what happens to Barnham. None of the choices impacts Moss's impression of Sam, nor Sykes's suspicions.
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