Fair point, Bobo. The difference is that Pops actually has produced in the NBA when given a chance. His rebounding numbers, as has been pointed out, have been off the charts - better or at least equal to guys like Reggie Evans, who have lasted.
I do find the theory that a more-connected NBA agent could have gotten him a guaranteed deal, but it's equally plausible that his incredible rebounding prowess and energy doesn't off-set his defensive weakness or poor outside shooting (though, again, there are other guys with the same weaknesses who stick around the league).
I will add one thing about the agent - whoever thinks Tony Taylor's agent is better becuase they contacted the Knicks is out of their minds. TT's agent has no clients in the NBA and is likely trying to showcase TT either for the D-League, a lesser American League or a mid-level to minor overseas team. To his credit, an atricle that mentions the Knicks looking at him will definitely peak the interests of teams from Iceland to Peru, but there's really no comparison to Pops' situtation.