This deal also brings political leverage in airbus favour. It can be spun as bringing jobs to the US and supporting US airlines in ensuring they have a market leading product at a competitive price, a product "'made in America" to boot.
All the these jobs earned and secured without risking Boeing jobs as they don't operate in this market.
It will be interesting to see how the current US administration plays this. Leaving well alone would be best, but I imagine the Donald will try to take credit. To not support this deal will be to risk jobs, something he's staked his presidency on.