On why Shaq was better than Hakeem:
Hakeem was a more complete offensive player and was able to hit free throws. I say Shaq over Hakeem for the dominance purposes alone.
Even with two centers and a guard dropping down to double or triple-team him, his only weakness close to the basket was his free-throw shooting as he often bull-dozed his way to the rim.
Shaq was unstoppable. Literally unstoppable.