Cruz was wrong on TPA & TPP, changing his vote only at the last minute. Trump has been talking about what trade deals are doing to our economy and industry for many years.
Cruz doesn't have much management experience. Cruz managed 13 government lawyers in Texas and 13 government lawyers at the FTC and his senate staff. Trump manages a $10 billion in corporations and joint ventures, and understands how to pick and measure other executives as well as how to develop metrics to measure and manage an organization.
Cruz has demonstrated dishonesty several times. Trump may have evolved on views but appears to honestly answer questions.