Yeah, also other bits of information, around their crowdfunding campaign Julian Gollop said n an interview that the Backer Build will be delivered January 2018, than that changed to Q1 2018, than to March, than to late March, than to end of March / beginning of April. And now they want to deliver it on April 30 2018. That is four to five months later.
About the financial side, Firaxis spent quit some money from their budget on extensive VO and cut-scenes (also they scrapped their initial work that was much much closer to X-Com and completely redid the game-system). Phoenix Point will most likely have neither (that might actually change with the recent success in pre-orders, so far only "some VO" is planned). Also it is said that developing in Bulgaria is a lot cheaper.