Well first, all five of those guys are listed as 6'3". Better examples of small scoring PG's this year would be Isaiah Thomas and Ty Lawson, or Eric Bledsoe and Mike Conley, but those guys are all off to hot starts.
Anyways, you're taking two guys coming off major injuries, one 21 year old, and two guys nobody considers elite, taking their performance less than ten games into the season, and finding trends from that shit? John Hollinger's rolling in his grave.
PS Whatever happened to Anthony Davis being a bust, anyways?