He's really talking all that shit like he's not currently fighting someone who's had not nearly as much time, resources and oppurtunities as him to grow and get stronger. He's talking like he's not one of those nobles that look down on him for not being born with a powerful job like his own.
The hypocricy is wild, and what pisses me off is that when Cross wins, he's gonna forgive all his bullshit and treat him like a friend, as always is the case with these types of stories.
Now, you could say that Cross is blessed to have a trio of overpowered teachers who want to molest him while helping him to train, but all of his growth has been through his own struggles and efforts while this guy just naturally gained his skills thanks to his main job.