Thanks for the welcome.
Well, I agree that it makes sense to treat Sajan differently, because he gets a recharge attempt instead of an automatic recharge.
But my doubt is regarding the ruling. So, according to the the ruling, you have to do the first action first. Potions wise, banishing. However, Sajan gets a recharge attempt instead of banishing.
If one combined the description of Sajan's power with, say, a Potion of Healing, it could be read as "(...)succeed at a Fortitude 6 check to recharge this card instead of banishing it and choose a character at your location to shuffle...".
I realize this is not a common wording for a boon, we see it mostly on banes, when they have special effects pre-encounter. Anyway, I think this conclusion is a possible one.
Again, I agree this is much more straight forward with Damiel. Simply read "banish" as "recharge" and it's done.