Dragon Ball SA: Saiyan's Ascension/Questions and Inconsistencies

Read the title.

Questions:
Post here!

Why is Uub alive in this?
A: It would contradict canon way too much.

B: Uub's not technically a reincarnation, but all of Buu's power is in him too.

Why didn't Gohan get a tail when his hidden potential was unlocked?
It's because he isn't a pure-blooded Saiyan.