One seed, two seedlings, two dif. plants

You can see 1 liters pot aren't good them after 10 weeks and a half, also if they are mostly soaked in water.. so i decided to clean the roots a bit and them transfer to 2 liters pot, One is ready to flower, the other was topped to distribuite light Better on the surface Now you can also see that the strange plant grew as a bush, while the other didn't, so there's something going on with the genetic. I don't Remember where i read this but sometimes in cases of 2 seedlings from one seed you can have a plant that is Just a normal one as it should be, while the other Is actually one of the parents of that genetic. So here i have a bush of something i can't tell because the info given on the booklet and on the website are confusing me and i can't tell what this strain this Is..Purple Sunset x GMO Cookies or MK Ultra x G13 x OG Kush? Or Is that the same? I don't really know and i can't really tell what this plant could be but It's growing nicely in a 7 liters pot. also made a cutting which Is growing vigorously in a 2 liters pot and im very surprised It looks that nice, i might even make other clones and maybe even breed It considering Its growth in that little space