Imax 3d Reald Avatar

Whats the difference between Imax Reald 3D and Imax the 3d experience?

i went to go see avatar yesterday in reald 3d and i was slightly dissapointed with the experience. I just want to know which one was the correct one to view Avatar in RealD 3d or the other version?

One is digital 3D. (Has nothing that jumps out at you) and real would be things that (jump out of the screen)

Imagine Indiana IMAX movie