At 14 weeks you have two immature cockerels. I'm not sure how hard the hormones have hit yet; that can vary a lot by age. Cockerels tend to mature faster than pullets. Their hormones can control them so they can be total terrors around the pullets. They can act like sex crazed fiends. It is not that they are trying to fertilize eggs, the pullets are not laying. The sex act is all about dominance. Not all cockerels are that bad but many are. A lot of cockerels literally lose their heads (are eaten) during that hormonal sex fiend phase.
Sometimes having two cockerels in the flock will egg each other on, make them even worse than they would be without the competition. Sometimes a dominant one will suppress the actions of the less dominant cockerel. He may be perfectly behaved until the dominant one is gone, then he becomes a terror. Or he may remain perfectly behaved when on his own. You never know how a cockerel will turn out.
If you can get through the hormonal phase most cockerels mature into a decent rooster, a good flock master. I want one that has a strong personality so he can win over the girls with his self-confidence and swagger and not have to rely on brute force. That is hard to tell when they are immature cockerels. I try to choose one that matures early but that doesn't always work. I've made less than perfect decisions in this.
One thing I will not accept is a human aggressive rooster. To me that is an instant removal. They are a danger to family members and visitors.
The personality of the girls has a part to lay in flock dynamics. At 14 weeks you don't have a clue what their personality will be like when they are hens. They may all be fairly docile and accepting of a male flock master or you may have one or two that want to be flock master themselves. My worst situation was an iron-willed hen and a fairly weak spirited male. That took two days of serious fighting to sort out and he never was a good flock master.
I can't tell you how to choose right now, I think your odds are about as good with one as the other. The way I do it is to leave them with the flock and make any decisions about separating them from each other or from the girls based on what I see, not what some stranger over the internet like me tells you that you will see. Because I don't know what you will see. Each year my flock is different.
It is very possible either boy will work out great. It is also possible neither one will. To me the best thing to do is base your decisions on what you see. Good luck!