FUEL covers a much broader client base for all media types (video, display, social media, etc.) via the use of AI as their major advantage whereas TUBE is focused on "video ads" and the covergence of campaigns from TV to web and mobile clients. They are both focused on "programmatic" but with different approaches both technically and market wise. FUEL's AI technology is their unfair advantage so to speak, but the recent high interest in TUBE is all about their focus on programmatic TV. The two together would be a powerhouse tying AI with programmatic TV.