Do you remember Shawn Bradley, Gheorghe Muresan, Manut Bol, Chuck Nevitt, Rik Smits? How about guys like Jonathan Bender and Dan Langhi and Jared Jeffries, all 7 foot small forwards? How about guys like Peter Ramos or Pavel Podkolzin or Loren Woods or Eric Chenowith or Primoz Brezec, all 7'2+ players who couldn't even stick in the league.
Gasol is impressive because of his skills and his agility for a man his size. Same reason why players like KG and Dirk are so impressive. Just because you're taller, it doesn't automatically mean you have enough of advantage over players who are shorter but are more skilled and/or more athletic. It's his size that makes his skill and mobility/athleticism so impressive.
What's just as impressive is that, even if we go on the premise that he's 7'2 or taller, he's been able to stay relatively healthy. NBA players who are that tall usually break down with injuries to their feet, knees, and/or backs at some point in their careers. Pau has had a few injury setbacks, but not nearly the magnitude most big men like that face, especially by the time they're his age and have played in the league this long.
Your point is pretty pretentious and pretty transparent.