are black penis less hard due to their size?

#1
i have the impression at looking at some homemade IR vids, that the big sizes of black penis led to less hardness...is this something you can confirm and does it matter to the girls?
 
#2
yes longer penises, black or white, have harder time keeping it hard..

Mind you that expanse of your wife or girlfriend's shapely white body certainly gives them that additional hardness...