credit for nut full house v. credit for quads

[pete fabrizio]

two situations:

1) you have QJ9T and the board reads QJJ73. you bet the pot and get raised.

2) you have QQ9T and the board reads QJJ73. you bet the pot and get raised.

am I wrong to think that people are more willing to give credit for the nut full in 1) than they are for quads in 2)? what are the differences between these? i can think of a few things, but i'd be curious about people's thoughts first.