It looks like the number of Champion chests earned with XBOT changed from 18 to 45 in your report.
I've ran the numbers using average chest value from Splex, and accounting for the difference in Season length:
| XBOT | AM | |
|---|---|---|
| Season Length (days) | 15 | 16 |
| Daily diamond chest | $7.6 | $4.6 |
| Daily champion chests | $27.5 | $36.6 |
| Season champion chests | $35.4 | $37.2 |
| Net Income | $70.5 | $78.4 |
| After fees | $68.7 | $72.2 |
| Adjusted for season length | $68.7 | $67.7 |
Based on this XBOT comes out slightly ahead in earnings.
RE: The Epic conclusions: XBOT vs. Archmage in the era of rebellion