Your figures are wrong, you didn't really take compounding into account....
B) Change reduction from 1% per week to 1% per month. (12% annual reduction compounded monthly)
1% compounded per month is about an 11.3% annual reduction, not 12%.
This makes DigiByte attractive to an investor for the following reasons:
...
*Bitcoin reward reduces 50% every 4 years, DigiByte has a monthly compound reduction of 48% every 4 years
At the new rate, Digibyte would have a reduction of about 38.3% after 4 years, not 48%.