I don't think you need similarity scores to see that he's on a HOF track, but those are some impressive comps.
I'd think the career OPS+ numbers of 179, 178, 165, 159, 151, 150, 144, 130, 130, and 106 as a rookie probably tell enough of the story. Career .318 average and over 300 HRs before turning 30. He'll get his 6th top-5 MVP position before turning 30 this year. Led the league in hitting the last 2 years, led in HRs twice, RBI twice, triple crown obviously...
I think he'd actually be getting close to being in now if he never has another good season in his life.