Kinglevels before / after update

So, before the update I was KL12, halfways to 13,about 50k points. After the update i am KL13 with 18k points, ok.
Now someone explain to me why my wife KL11 before the update with almost KL12, ended up as KL14 with over 10k points left.
Makes no sense to me.
Also, i amassed in 5 years 140k starpoints and my wife 500k in 1 year, playing pretty much the same amount in the last year.