Actually it is more likely then not since the words and phrases are the exact same. Thats all thats needed. This is not a high burden of proof. need only show its probably true and its more then that.
When combined with Cruz’s other behavior issues this campaign it shows a pattern and practice of sleazy politics and blaming others. After a few times even the staunchest Cruz supporter, if honest is going to question his actions where hes doing the Sgt Schultz impersonation over and over and over.
I have not seen a pattern and practice of sleazy politics coming from Cruz. I have seen various incidents characterized that way by his opponents, but when I looked at the actual facts, their assertions were not borne out.
Unfortunately there eventually develops a "herd mentality" where people simply assume something to be true because so many people keep saying it is.