As far as height well Shaq was measured 7'1" without shoes in 1992, he was barely 20 at the time so it's possible he's grown a little. He also has very big shoes that add about 2". Amare on the other hand measured 6'8.5" at the 2002 pre-draft camp, in 2003 the Suns claimed he grew a little to 6'9.25".
Both figures sound believable, Shaq tends to dwarf even legit NBA big man.
Amare does look a little closer to Shaq's height than he did his rookie season, here is a picture of them from '02
Hope that clears that up. I knew people would be a little confused when they saw Shaq and Amare pose on media day. Most likely Amare is 6'9", give or a take a bit and Shaq is every bit of 7'1" if not a bit more.