1) no it had 10 days in some countries too.
2 and 3) Because it opened in 2 different times overseas. One around october 24th-27th and one along with US Nov 2nd-3rd. So of course it dropped not as much while JL has opened in all countries at sametime
I already said why that is because we are living in a shitty biased marvel world where everything is on its side incl critics and journalism. While DCEU gets hated on by biased critics and biased pathetic hate ariticles with ton of pathetic click bait crap out there. . When have you ever seen negative clickbait stuff for MCU. Also just take a look at this board even. Its a sheep world