I disagree that he is overvalued. Ardan is always solid due to his three skills all impacting mobility. That mobility makes him with Lance the most difficult Roams to secure an Ace against. He is always in the top 5 of Roams. I think he is the one Roam everyone should master. I also think Vanguard, much like Afterburn, is arguably one of the top 5 most impactful skills in the game. Lastly, there is no solid counter to an Ardan first pick because it reveals nothing about your next pick.
Also, your Alpha should have built early burst (TB/SB) against a Skye/Gwen comp instead of BP/TM. CP Skye is really strong and people are sleeping on her.
After a first pick Ardan, I’m guessing the enemy team went Skye and Gwen. Why didn’t you pick a Celeste and Glaive to match them with 2 stuns? Or draft a bursty dive comp with great dodge like Reza and BF/Taka? I don’t 3v3 but, respectfully, that seems like a bad draft and bad builds.