I find it amusing for someone supporting Trump to claim someone else's candidate is a sociopath.
Yeah, that's been Cruz's track record, stepping on anyone in his way to get what he wants...
You are mistaking drive to succeed and a lack of "Midwestern Nice" for sociopathy. Trump's demeanor is very much like the northeastern transplants I spent some years with growing up with. Ethnic Italian/Jewish/whatever sorts from urban megalopolises exhibit a much more aggressive, verbal, in-your-face attitude; as well as more conscious displays/strutting. The former appears gauche and the latter appears mildly comical to those brought up in more stoic subcultures. OTOH, they are not going to roll over and let you bugger them the way so many midwestern folk let outsiders get after them.
And drive to succeed is what it is. Some folk have it, some understand it, and some fear it.
Trump is obviously not a sociopath due to his documented interaction with humans that express sympathy/empathy and reciprocation:
1. Loyalty to allies, friends, and employees to the point he takes political and/or monetary damage from it.
2. Ever listen to his ex-wives? They are positively disposed toward him despite his failings.
3. Decades-long friends, especially with peers, who don't depend on him for a paycheck.
4. Trump's kiddos' attitude toward their dad is not what I have experienced with the children of sociopaths.
5. Documented group loyalty to his old-fashioned notion of America.
FTR, I do not consider Cruz's drive toward success as sociopathic. Sure, it can be, but drive by itself is not enough. I do consider his uncanny valley learned-not-instinctive smile and facial expressions a problem, as well as his complete lack of friends to be indicative of an emotional vacuum at his core.
Early on Cruz was pretty much my choice. Like with Hillary though, the more I actually saw and listened to him the less I liked him. He was good on paper for the most part. His demeanor and weakness on immigration is what lost me.
Almost precisely how I ended up voting for Trump in the primaries. On paper, Cruz looked great. The creepifying reality, not so much. That taught me a lesson that I need to get video of any candidate I may support. Not to see if they are good on teevee, but to take their measure when interacting with other humans.
And of course Cruz was weak on immigration and trade, just one more globalist errand-boy once you got past the verbal squid ink.