comparison of size and strength of 'regular' adeptus astartes, primaris and custodes?

i am curious for the difference the strength and size or those three groups? and if someone can give me numbers (like they can lift 1 ton a car etc). i know astartes are the smallest and weakest of the group but to what extent? also i watched a youtube short that said a single custodes manage to kill a group of primaris, so it's mean custodes are the strongest but not the biggest?