Was on flight coming into EWR this evening. Very windy and few aborted landing attempts then eventually announced we were diverted to LGA that they are diverting all the planes out. But I could not see anywhere that EWR is indeed closed or having major problems. When we landed at LGA pilot said someting about our aircraft not being able to withstand the crosswinds at EWR (was a 738). Are different aircraft more tolerable of wind conditions? Or were there likely other reasons for diversion?