Taking aside the blue wheel highlights and blue mirror caps on the white car which are both a bit marmite there is no difference externally to a standard R apart from a few badges
Internally apart from the carbon again they remain the same as a standard R
The other standard specification items on the R20 apart from the performance upgrade are all available as options on a standard R
Don’t see how then the opinion of it being designed by an 18 year old applies unless you think that of a standard R also