Thanks for the review. I'm sure this took a lot of work!
It's nice to see an independent side-by-side comparison but there's a huge amount of randomness involved and the sample size is tiny. It's 1 account for 1 season only.
Looking at your account's card value, it's almost 50% Rebellion cards, which is very uncommon in my experience. Most of our users have few or no Rebellion cards due to them being new & less cost-effective. That makes you account's collection unique and not representative for the average player.
I think the best advice to give undecided players is to try out both services. The good news is that XBOT has a free 7 day trial, so you have nothing to lose by giving it a shot.
RE: The Epic conclusions: XBOT vs. Archmage in the era of rebellion