Not only you fulfilled my dream of finding people to have a good threesome with, but you must have gone with it without restraint.
I have nothing to say but the fact that I'd love that.
And that the man maybe was better at it than her, not because he is a man, but just because he was being more honest/free. It is worth remembering that a girl in a 2-males threesome is always in a weakened position and if the guys don't respect that she is not going to give and feel her best.
This is for biological factors that don't depend on her personality alone: first, she needs to trust that you both are not going to hurt her, because on an subconscious level she knows you could kill her and that can already be something to take care of. On a subconscious level, you are probably free from this extra burden because you are not being vulnerable with two dudes twice as strong as you. All free energies to play instead. Second, a girl's biology makes it so that we get aroused slower than men. We don't get there in the zone in three seconds, it's like a wave that you have to ride for a while longer. We still experience the same, but you have to take care that everyone in a 3some is on the same page, and not just looking like they are. It would be like for you getting down with 2 fully dressed people...quite disappointing right? In the same way, women need to get there and not be rushed or be assumed to be turned on just enough. It is not personality, it is hormones and body parts functioning.
In conclusion... well done for living the dream. I hope the guy was just better and I'm glad you enjoyed him. The worst case scenario would be that she actually wasn't enjoying it at all, but I hope it is not the case.