I don't think it's unreasonable to compare the murders of these two women, both by nature of the crime and similarities between the victims, and wonder if they were killed by the same person. All that's been said is there's nothing at this point connecting the crimes, which is another of way of saying that so little is known about both crimes currently that no connection can be made ( and conversely ruled out).
Time will tell, and if the DNA on the victims is different, then that answers that question. In the meantime, it's plausible that the perpetrator of Karina's murder would travel around, particularly if he's "transient", and since he's wanting to avoid capture. If so, this type of killer would not be the first to hunt for prey across geography.
Whoever did either crime is a danger to any community and I hope something surfaces quickly in both cases to lead LE to the killer(s).
Also, Karina's murder doesn't seem particularly unsophisticated to me (I think I saw that someone in LE made this remark). Narcissists and sociopaths/psychopaths often don't really care what they leave behind, and in fact, often display or leave the body in a place where it will be found because they like the theater and further humiliation of their victim by exposing the things they did to her. These are individuals who think they're smarter and more entitled than the rest of us, and they seriously don't mind running risks, or even perceive risks. It can be either a case of hurry and get done what they want to do to their target and so what if they scatter evidence, or, 'look at what I did, now come and find me'. And all manner of other lunatic thought. JMO
