"If we omitted something, it was this more than anything else. And we tried to get it in, but the footage wasn't there," Pandev said.
"Sporting rivalries, who did what to whom, who was disqualified, who won a trophy - all of that pales into utter insignificance in the context of the bigger story.
"Senna is not a film about a sporting rivalry, because we would have called it 'Senna vs Prost' and started it later and ended it earlier, if it was. The rivalry was an important element in our story - but it was just one of many."
Prost is still intensely proud of the era which saw the pair dominate F1 racing.
"Today if you say Prost you say Senna. It is part of the F1 history and in my opinion is maybe the best years."
In a recent poll by CNN, Prost was mentioned in dispatches by viewers in our quest to find the greatest F1 driver of all time, with Senna and Argentine maestro Juan Manuel Fangio acknowledged as the best of their eras.
Prost believes that he and Senna were unwittingly the victims of their own success and did not receive the protection they deserved from the media and sponsors.
"We were very much exposed," said the Frenchman.
"We had a lot of people who were very interested, very motivated to have this kind of story.
"We did not realize that at the time. We just wanted to win but we had different characters and a different way of thinking and racing."
Despite the obvious dangers, Prost would not swap his experiences with those who make up the modern day F1 grid.
"If you are racing like today with almost no risk and you can continue until you are 44 or 45 years old like Michael (Schumacher), for sure it is tempting.
"You need to remember that there was a very bad period when you went out on a Sunday morning and say what's going to happen today?
"Am I going to be able to come back because we had very bad accidents, very regularly.
"I would have loved to have driven in this period, working with the engineers on the technical side, but no, I prefer my period. "
But Prost remains deeply unhappy about the balance of the Senna film and in particular the closing moments.
"What I regret is that our story was more than sport, it was also human," he told CNN.
For all that, Pandev is convinced they did the story justice in a balanced and fair way