In Mark Twain's novel Pudd'nhead Wilson, what does Tom take pride in in chapter 20?

In Chapter 20 of Mark Twain’s novel Pudd’nhead
Wilson, Tom, a character born to a light-skinned black mother, has been
“passing” for more than twenty years as white. He had been adopted by a wealthy judge
and has recently (while dressed as a woman) murdered the judge during an attempted
robbery.  An Italian twin, Luigi, has been falsely arrested for the murder, and during
and after Luigi’s trial (described in Chapter 20), Tom has several reasons to feel proud
of himself.  It seems inevitable that Luigi will be convicted of the crime, that Tom
himself will escape scot free, and that Pudd’nhead Wilson, Luigi’s defense attorney,
will suffer a major and very public legal defeat.

Tom,
therefore, feels proud for a number of reasons, including the
following:

• After sitting in court and listening
  to Pudd’nhead’s apparently doomed attempt to defend Luigi, Tom feels “comfortable . . .
  , even jubilant.”


• He also feels proud of his apparent
  triumph over Wilson: “He left the courtroom sarcastically sorry for
  Wilson.”


• He also feels proud that his disguise as a woman
  seems to have worked, and he feels proud that Wilson is unlikely ever to discover the
  disguise: “I'll give him a century to find her in -- a couple of them if he
  likes.”


• He also feels proud of the fact that he has even
  disposed of his disguise: “the clothes that gave her her sex burnt up and the ashes
  thrown away -- oh, certainly, he'll find HER easy
  enough!”


• He feels especially proud of his own general
  cleverness: “This reflection set him to admiring, for the hundredth time, the shrewd
  ingenuities by which he had insured himself against detection -- more, against even
  suspicion.”


• He feels proud of the fact that his plan has
  apparently been absolutely flawless: “Nearly always in cases like this there is some
  little detail or other overlooked, some wee little track or trace left behind, and
  detection follows; but here there's not even the faintest suggestion of a trace
  left.”


• He feels proud of his apparent intellectual
  superiority over the seemingly dim-witted Pudd’nhead Wilson: “The man that can track a
  bird through the air in the dark and find that bird is the man to track me out and find
  the judge's assassin -- no other need apply. And that is the job that has been laid out
  for poor Pudd'nhead Wilson, of all people in the
  world!”


• He feels proud of the apparent fact that he will
  be able to torment Pudd’nhead about losing the case for as long as the two will know
  each other: "I'll never let him hear the last of that woman. Every time I catch him in
  company, to his dying day, I'll ask him in the guileless affectionate way that used to
  gravel him so when I inquired how his unborn law business was coming along, 'Got on her
  track yet -- hey, Pudd'nhead?'"


• He feels proud of the
  fact that he can begin tormenting Pudd’nhead almost immediately: “He made up his mind
  that it would be good entertainment to look in on Wilson that night and watch him worry
  over his barren law case and goad him with an exasperating word or two of sympathy and
  commiseration now and then.”


• He feels proud of the
  apparent fact that one of the Italian twins will pay for a crime Tom knows that he
  himself committed: "I owe them no good will, considering the brunet one's treatment of
  me that night. Prejudice or no prejudice, Pudd'nhead, I don't like them, and when they
  get their deserts you're not going to find me sitting on the mourner's
  bench."