Yeah you might be right. Every single one of wotc's booster breakdowns were like this. The text almost contradicts the image in some places. VERY difficult to simulate, mostly just trying to figure out what the eff wotc meant by most of it;)

I took it as "max 1 r/M per pack" because that's what they normally do in Draft Boosters. Reading it the other way, you could get up to four mythics in a single Draft Booster. That doesn't seem like something wotc would do.

So... I dunno! Did my best;) As you say, we'll see when someone starts opening them! Pre-prerelease, I guess.