McCluster is a valid comparison. In fact, he may be one of the only under 180 pound RB/WR/specialists that compare well. He is also one of the only players that size to get a second contract in the NFL and aside from one fair season, he really has not done much. If that is the high water mark for a 3rd round pick, so be it.
And, are we really so hot to get a specialist that we are pimping Devon Hester? Sure, he returns kicks. The Steelers dumped guys like Stefan Logan because ALL he could do is return kicks. If that is his only value, pretty much could have drafted a punter in the 3rd....but that would have likely pissed people off.