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The creator explained why that twist was the right choice.
But you cant substitute one version for the other, because the endings are verydifferent.
But in Cronenbergs version, neither twin survives.

They refer to themselves as Siamese twins, and talk about separating.
Beverly takes this to a dangerous, literal level, cutting into his brothers abdomen for an impromptu operation.
The next day, Beverly realizes what hes done: Elliot is dead.
TheDead RingersTV series keeps many details the same, so why does the ending look different?
So we wanted to find the ending that best served our twins and our story.
source: www.bustle.com