The reality is GTA was always more popular when it was in 3d. Whilst the series always did well in 2d (just like chintown wars has sold like 1.4 million copies) its the 3d releases that made it the massive franchise it is today.
It was never going to get a nsmb like return to 2d because it simply never was as big in 2d whereas mario was as big if not bigger when it was in 2d.







