i just started the beta and am playing against people at least 7 ranks above me up to 10. im rank 1. im still learning the game and im playing against people who have 10 times my experience with the game let alone all the cards they have accumulated with that time so i have no chance to beat them even if i had superior tactics my units are much weaker
DONT HAVE MANY PLAYERS 
Usually in Beta’s matchmaking is open. The more matches, the better the stats and feedback. Won’t be lack that in the final game I wouldn’t think.