I do not believe there are many who could have dragged the admissions he got from Alyce LaViolette and Jodi Arias. Jodi was calm, stoic, seemingly unconcerned; smug and arrogant in her ability to block any question she didn't want to answer.
Many would have kept pestering her with the same questions over and over and over hoping she'd crack and they would have been polite and firm with her. And she would have successfully evaded almost every question.
JM was hip to her game from the beginning. He lulled her into a false sense of superiority over his questioning ability, zipping around seemingly aimless from one subject to the next, from a serious question to an innocuous question until you could see her relax and give a few smirks. Then he lowered the boom on her a$$ and she didn't know where to look. She was trapped in her own web. And JM, triumphant, asks: "Ma'am, do you remember what you told us just 30 seconds ago? Do you remember that?" And suddenly his questions had the speed and force of a freight train. She made critical errors on the stand with Juan.
Juan would not let go of Alyce LaViolette and was relentless in bringing her to her knees, too. He was completely unfazed by her snotty time out recommendations and her wanting to take him on a trip around the world when she answered every question. He would throw it back at her fast and furious until she too sat in stunned silence.
Despite media criticisms and TH Monday morning quarterbacking him, he never lost his footing nor did he give up his style. His style offends some but it works for him and we saw him work magic.
So no, I don't believe it was easy street and I don't believe just anyone could have gotten the admissions that he got.