This seems like a fun fic/doujin idea - both goddess!Madoka and devil!Homura somehow travel all the way back in time to before Homura contracted with Kyubey and meet each others' past selves. Godoka's trying to be all kind and supportive while Homucifer (I'm sorry I forgot what her nickname is) is just unrelentlessly horny.
^ I think Maria is probably one of those that dont have big obvious muscles but instead has lean muscles (like some athletes) so she lift easy without looking bulky.
Nearl might be the same as she doesnt seem obviously ripped or bulky either in her beach skin.
might be a trait of being horsegirls.