Since Cruz was born in Canada, he may not be up on his American history; you know, the same way he was not up on his father's activities in Cuba pre-1960. But some of this might make sense:
Lincoln & Dewhurst? I mean they are both tall, lanky fellows who come from very humble beginnings. Both are thoughtful and enjoy the big picture. Both men understand war - Lincoln was commander in chief and Dewhurst is a Veteran. Lincoln understood that intelligence was the key to defeating the south and Dewhurst? Hey, he's ex-CIA baby!
Now consider the OTHER comparable...Raffy Cruz & Stephen Douglas:
Douglas was known for his "his hard-hitting oratorical style" and was considered a dandy dresser and was known for his vanity and arrogance.
How funny, so is Cruz! Could Raffy Cruz have been Stephen Douglas in a past life? Could be, could be...
A coupla things to remember: Douglas's views and actions (i.e. the Kansas-Nebraska Act) helped lead to the Civil War. And Douglas died at aged 48, Cruz is what, 41? Hmmm.....
Cuban hot wind (with a cold canadian blast) vs. substance. Texas doesn't need a circus like show to know they'll pick substance every time.