Same effect? Are you kidding me? Are you trying to be a funny guy now? Being disadvantaged is a nice plus but it is no where (I mean no where) close to being an URM. Sad stories are great but throw in the fact that you are black or Mex/PR and you got yourself a winning application.
But be careful, my friend is as white as they come and he tried to pull off that he was an URM during this years application cycle. He interviewed at a lot of good schools, but got rejected by all of them except for waitlists at Baylor and Duke (go figure). Most likely he will be going to his state school. So just be careful bf you think about lying bc. they prob do an internal URM check (physical appearance, how you talk, etique and manners, how intelligent you sound etc... you know the stereotypical kind of stuff).