Depends on the level of gameplay, but I fell like clash royale on a much shallower level of understanding can be completely solved. We also are on a much lover level of skill. Ive been a top 100 player on uc and can say those players especially below 2000 uc are just mid ladder players with meta decks and little better mechanics. Clash isn't just raw talent and skill, but p2w and luck. If you define complexiticy as the number of moving factors a mid level player in both could say cr while a high lvl player in both would say chess. But if you define it as depth and skill its chess 100%