So I have to repeat in words what is better visualised?

OK

A Pangeatic Earth would be lopsided. The CoG would shift towards the heavier landmass. Ocean would distribute symmetrically/radially about the CoG submerging parts of Pangea revealing new land on the opposing side.

However the really convincing evidence comes from the similarity of old/new surface on all the components of the SS with visible crust. All show same pattern of growth

edit

And matching of opposing tracts of old surface