It's safe to say that we're all not going to agree on any one contestant. That's what makes the world go round.
We have had some "Idols" through the years - long before American Idol came on the air. One of the most notable ones was Elvis Presley. He was an extremely polarizing guy for his time and a total icon. Michael Jackson was also very polarizing for his time. Madonna is another one. There are several others, obviously. One thing that they all had in common was that they were performers and not just singers.
I think of the 2 contestants, Adam has the potential to become a big icon in the same tradition as the others.