“I have davened in different shuls, and in Lubavitch I noticed the majority do not shokel by davening.”
It depends on what you consider shockling. In a Litvish Yeshiva, a lot of the bochrim flail around like crazy when they’re davening. Chassidim seem to be more tame, and also don’t take as long (contrary to what others have said here).
If you mean you’re seeing Lubavitchers standing as still as a statue, then they do not represent the majority. Most Lubavitchers daven normally, with a moderate, healthy non-drama-queen shockle.