Lyndon Johnson, by all accounts, was a big, egotistical, profane, domineering man. So is Donald Trump. Both men showed a keen sense of their opponents' weaknesses. Both men bullied others relentlessly. Both men were obsessed with television news about themselves.
But there are significant differences. Lyndon Johnson knew how government works and how to make it work for him. Donald Trump is clueless, careless, incurious, and thus likely to be ineffective.
One of the Senators I worked for was like LBJ in many ways: big, assertive, temperamental. Over the years I observed, however, that he didn't lose his temper, he deployed it --for impact and effect. And it often worked. Johnson, too, deployed his anger and his affection for strategic effects, and they often worked.
Too bad -- for him -- that DJT lacks the skills and qualities of LBJ.