Are you saying that the 'correct coin toss prediction' gives you 4 extra points?

The gap in points isn't only because the coin toss prediction. You only get a Jumbo when your all predictions are correct.

There are overall 6 predictions to make in every round.

If any 4 of your predictions are correct, you get 4 runs, the difference occurs when the 5th one goes correct, instead of 5 points, you get 6 points.

And when all of your predictions are correct, instead of 6, you get 10 runs.

I understand what you're pointing to. It's a sudden jump from 6 to 10 points, for 5 correct to 6 correct predictions, which is a difference of 4 runs, it's huge gap.

But technically, we can only reduce it to 9 runs. If we reduce it to 8 runs, there's no difference between a Bingo and a Jumbo prediction.

A Bingo prediction gives you 1 extra run so, a Jumbo prediction should at least give you 2 extra runs.

Bingo= 6 runs Jumbo= 6 + 1 + (3 extra runs for predicting all correct).

I hope you now understand, how much of maths, I had to apply behind all of this.

We can onl reduce it to 9 points for the sake of Jumbo's importance and distinction with Bingo.