Gargomon: Well wtf do you mean, "better duo"? Just look at their flamboyant smiles! Wobbling is the infinite performed by grabbing with the main Ice Climber and alternating between headbutts (Popo) and forward tilts (Nana, or the secondary Ice Climber). The forward tilt stuns them enough so that if timed right, the grab is inescapable.
Also, what are they doing in that picture? The first picture looks like it's showing their old taunt, but in the last picture they put their hammers down. What does this mean... victory dance or final smash?
Lastly, I think the picture of Popo footstool jumping proves the return of desynching. At least they'll have something going from them, even if chaingrabbing gets nerfed or wavedashing is removed.