Trump's annual revenue last year was 9.5 billion with total employee numbers above 20 thousand people. Cruz is good at at playing insider political games and getting faithless delegates, but not so much at doing anything actually productive to society.
Both those numbers came out of your posterior, I presume?
And that has absolutely nothing to do with whether or not he should be president. If that is the criteria we should use, we should look to Bill Gates, Warren Buffet, heck even Mark Zuckerberg - they are all much more wealthy and employ a lot more people.