I wouldn't refute the 35" vertical claim. Young Shaq was a specimen. The "Black Tornado" was one of the best moves by a big man ever. But he took several years to really get comfortable with anything other than a slam around the rim, being able to spin right, finish left, use some touch, etc.
If Cousins already has that kind of finesse around the rim, and has the physicality to bang every night, then that's a huge deal. I don't care about the comparison, that's a nice young center. Since we're talking about Bynum, it took three years of work with Kareem for Bynum to be able to establish position and go to his strong hand, never mind his off hand. He's still not the kind of guy who will push and shove all game to get his spot on the block, and then finish in your face. Spencer Hawes made him look like a beast, but Bynum really only gets off once every ten games. It also doesn't help playing with Kobe, both on and off the court. If he doesn't develop a mean streak, he'll be a huge waste of potential.