Looking at the design and concept, they're actually the same. They even share the same support, let's be serious, it's obvious they are the same! Even though you're subscribed to their sig campaign, you shouldn't spread misinformation, imo.
For anyone interested, 1xbet (the same as 1xbit) has a pretty large amount of complaints: https://www.google.com/search?q=1xbet+complaints&ie=utf-8&oe=utf-8&client=firefox-b-ab&gws_rd=cr&ei=UV1uWMKiEce9sQHCkL7ADg
Everyone is free to bet here, of course, but, speaking for myself, I wouldn't put my BTC here, at least not yet (until solid proofs are brought that they are not the same with 1xbet)