In epsiode 71 of Dragon Ball Super, Goku is shown to have some kind of special training. It seems that Whis knows what Goku is doing but doesn't want to tell Vegeta.
My questions are:
What is the special training that Goku is currently undergoing?
Why doesn't Whis tell Vegeta about this?
Why Beerus says that "Goku is the leading fighter..." even though till the last fight (i.e., with Zamasu) both seemed to be on equal level?
Does it mean that Goku is again going to get stronger than Vegeta?