My assessments (I don't eat them, so I just assess people eating them

OMG, smaller cupcake and simpler. Deservedly so because it is denser.
Joe's is an in-be-tweeny. Rich, delicious, people were 'yumming' and sharing them because they were so dense and flavorful
Endulge (I like the name!) over the top. This is the special occassion cupcake. Nicely decorated, a tad larger than others but the lightness calls for it, sinful in a different way from Joe's sinful flavors offered.
Cupcake eaters in the hood would have no problem going to a different nice place every day of the week and having a nice cupcake (or other treat, say from UC, just to 'round out the goodness). Wash it all down on Saturday with a Morellis!!!