There's lots of EU players better than both xQc and Danteh who aren't signed, but as you rightly mentioned earlier, their popularity on stream makes people notice. Unless OWL rosters have someone properly qualified to be selecting talent, they'll be selecting players from NA with large followings, as that's the best known region in OW. xQc and Danteh (to a lesser extent) are renowned for being toxic and the way they act has built them their audience. They're definitely good players, but there's countless better options within EU who are unsigned. The problem is that most EU players don't have the audience that those in NA do, and so they can become very unknown if they don't compete for a lengthy period of time. It's a big problem for OWL season 1, and I really hope that for season 2 there's much greater integration of EU teams and EU players, as the region itself is second only to Korea.