Clark also played in a different era: back then, practically everybody but Shaq was a toothpick.
Clark basically played from 1999-2003. That's at most 15 years ago. Here's a partial list of "toothpicks" he had to go up against (all of whom played at least 6000 minutes and grabbed at least 1600 rebounds over that span):
Duncan, Ben Wallace, Shaq, Mutombo, Brand, Webber, Malone, David Robinson, Dale Davis, Divac, Anthony Mason, Brian Grant, Weatherspoon, Juwon Howard, Olowokandi, LaFrentz, Ervin Johnson, Brad Miller, Kenny Thomas, Glenn Robinson, Othella Harrington, Coleman, Kemp, Ostertag, Foyle, Nesterovic, Mashburn, Aaron Williams, Malik Rose.
That's 29 guys, not a toothpick among them, and this is only the guys playing big minutes for four years. Dip a bit lower and you get McDyess, Baker, Battie, Pollard, Kenyon Martin, Mourning, Magloire, Ewing, Fortson, Potapenko, Dampier, Foster, Sabonis, Ilgauskas, and Olajuwon all over 1000 rebounds in that span.
We're not talking a league of pansywaists here. A different era? Maybe a bit, but it looks to me like things haven't changed that much. You're trying to sell us on a "uphill, both ways, in the snow" story here.