Tycondrius was Queen Rylania's eldest and only son. He was the most successful War Prince in the history of Charm (aside from her) and had found Realmwide acclaim due to his guild, Sol Invictus.
If Queen Nyctis sought him as a son-in-law, her eldest daughter, Ananta was his only socially suitable pairing.
If the age gap was a concern, the Queen of Shadow had other daughters...
Conversely, Suka was the youngest Princess... her bloodline, the least pure, and with the fewest achievements to her name.
Tycon could have chosen to be offended by Ananta advocating a marriage between him and Suka.
He was not.
From what he knew of Ananta, she did not particularly care about status-- neither hers nor her family's.