DoOver
.450/400 Nitro Ex
The difference between Perot and Trump is that Trump recognized that a 3rd party run only hurts the party you are most closely aligned to.
So he engineered a takeover of a major party.
If you can't win the nomination of the major party you are most closely aligned to you will never win the general election, and can only ever help the candidate you most strongly oppose.
But Perot thought "I can't get 50% of the Republicans to vote for me in the primary, but I will get enough democrats to vote for me in the general to win" that's insane. The only way that works is if he's more popular among democrats than Republicans, and that would make democrats the party he was most closely aligned to.
I wouldn't say engineered, I'd say clearly the only Republican choice.