Your assessment of Vlad Jr. is accurate, but he is not comparable to Manny.
While it appeared at times that Manny didn't even fully grasp the rules of baseball, at the plate he was one of the most cerebral and detail oriented hitters of all time. He had one of the most technically consistent right handed swings of all time. He may have been autistic.
Vlad has altered his swing more in the past 5 years than Manny did in his entire career. The two are not comparable, for better or for worse. There's a lot of content on Manny out there, he's a fascinating figure.