Looking at the Realclearpolitics average
Cruz does better than Trump.
Cruz vs Hillary——Hillary +1.3
http://www.realclearpolitics.com/epolls/2016/president/us/general_election_cruz_vs_clinton-4034.html
Trump vs Hillary-—Hillary +4.4
http://www.realclearpolitics.com/epolls/2016/president/us/general_election_trump_vs_clinton-5491.html
P.S. If you want to see some of Ted Cruz’s policies, go to...
TedCruz.org.....that’s TedCruz.org :-)
And those numbers? I'm not convinced, and here's why (I've expressed this before). Veterans and military and those closely connected to them like Trump. Those over age 60 (or so) who grew up in the better US Trump talks about like Trump. Young voters who are as yet unaffiliated are liking Trump's message. Those pockets of excessive support won't show up in a poll.
Logic says match hillary against Trump and Hillary has nothing to offer. With Cruz, I'd suspect there will be voters who take the known over the unknown.