[ceegee]

It is way different because like Ray Zee said, If you have a strong hand and complete in the bring in, people can tell. You have the choice of only bringing in for a little and if you choose to bring in for full it definitly shows you have a good hand, which people can then tell you have a premium pair or trips here. If you are UTG and complete, this could be any range from A2[2] to TT[2] if you are loose at a low limit game.
If you limp the jacks with a Queen and King left to act and they limp as well, you are asking for the drawing hands to catch as well as maybe one of the queens or kings pairing their door card. The main objetive in stud according to every book I've read is to get people out as early as you can, and without a monster EP, trips, you don't want people drawing to a hand that will beat yours. You want to play most premium pairs agressive if the board looks non threatening.
The only case where you will limp EP is if you have a bord like Q, K, J, A, left to act because you have 3 higher door cards as well as your jack are dead.