Generally when people point out something like that they are looking for loopholes to exploit. Barca also outright says he could so I just wanted to be sure. I honestly think it would be funnier if he couldn't. 

I will say that if the two were to go one on one without resistance and just go full force that Barca would win. Estella is primarily defense with her telepathy and not very offensive with it. That is why I set the bar so high and feel that she is relatively safe from his attempts.