I didn't accuse you of saying Halo 3 did better. Though it's unclear what point you were ever making in bringing Halo 3 into this.
"On January 3, 2008, Microsoft announced that
Halo 3 has sold 8.1 million copies." - since we're sticking to Microsoft's numbers, as per your rules, shouldn't you wait a little over 3 months and see if TLOU II can hit 8.1 million?
https://web.archive.org/web/2012051...pot.com/news/ms-177-million-360s-sold-6184291
GTA IV did about 8 million in it's first week based on that. TLOU II did half that in 3 days, so it's not impossible for it to have hit 8 by the end of the week. GTA V has the global record for week 1 sales, so it's not the most fair comparison. Modern Warfare II, similar to GTA IV, did about 9 million its first week. That said, if your only counter examples are the two biggest multi-platform franchises to ever exist you might need to re-think your idea that 3 million units wasn't a highlight last generation.
It's not clear what your argument is, then, because no one said that 3 million in 3 days was the best last generation could offer. You're not arguing with anything anyone said. Nevermind that every counter-example you gave we don't know exact unit numbers for first 3 days, generally speaking you expect more sales in the first 3 but it doesn't really have to be the case, GTA IV selling 8 million in 7 days doesn't necessitate exceeding 3 million in 3 days, you realize this, right?
You've changed the argument, you claimed the source said nothing about worldwide sales, now your problem is the legitimacy of the source and that they didn't provide their sources. Anyways, now that I've cited what Microsoft has said, I'm going to have to assume you yield at this point, how much more can you twist this argument out of proportion?
I almost forgot, you keep citing revenue generated and not unit sales, I was being charitable with the unit sales I gave you, they completely ignore things like special editions and such that cost more than a regular copy, in fairness I went for 60 dollars per copy (which isn't what TLOU II always sold for, many editions). I would think with the amount of benefit of the doubt you've gotten you should be humbled by the fact that you still don't look to be making a strong point.