This was fun to read! I would love if more people shared short size thoughts like this~
I mostly agree with what @tiny-ivy wrote. I always like size content to feel more “personal” and Scenario 1 has a lot of buildup and personality for the giant. Bonus points if he’s like a bitter ex-boyfriend or something. 
I also don’t get much out of other women in size fantasies, so it’s not really fair for me to comment on that, but I can obviously see the appeal for people who are!
(Though I don’t really like sharing my giants in general- I am awfully possessive for a tiny.
)