Caught legendaries in a few balls/weak balls?

[Xynic]

I caught Xerneas with a net ball in one try
I expected about at least 7 tries, but I'm not gonna complain lol
The hardest catch I ever had was Zapdos. I was still trying to catch him with pokeballs (over 60! I didnt even bother to count anymore) to the point he used up all his moves and struggled to death. I had to reset 4 times (but 1 reset was because my Ninetails accidentally killed him with a critical hit lol)

I do remember spending 15 premier balls trying to catch a lv 19 Eevee on X though