The Nine is just more news put in a slot that doesn't affect the Beeb's other news programmes, despite the fact that you have 45 minutes of Scottish, UK-wide, and international news on One at 10. There's no reason for it.
No, as discussed earlier, you have 45 mins of Scottish, English-masquerading as UK-wide, actual UK-wide, and international news
I was quoting The Nine's description on the Beeb's website in an attempt to show the similarities of the two. Honestly The Nine can probably be more closely described as Scottish Newsnight due to the length, material, and color scheme. Just with Scottish news that your going to hear at 10:30 anyway.