If you bother to open the link, the results are:
41.3. TRUMP
34.9. CRUZ
Where did you get the numbers in your headline?
It's clearly stated that Cruz clobbered Trump in a two man head to head matchup.
polling.reuters.com/#!poll/TM764BY15
When you scroll over the chart, the numbers change according to the date. These numbers are the latest, with Cruz pulling ahead.
Cruz people are “principled” conservative. As such whatever they say is gospel. Don’t you know that?