Patty did not look like a better play maker in summer league. He is more like JB than a real PG - he is a score-first guard, he sure is fast and he can create some - but he really does not run the offense anywhere as well as Armon, imho.
BE's reports after summer league seem to match my impressions:
"Armon Johnson was clearly the standout player of the week for the Blazers. His stock rose enormously. He played well on both ends, guarded a variety of players, kept his head in the game, and filled the boxscore on good nights and bad. His physical qualities were exciting. His production looked both solid and transferable. You never decide anything based on one week in July but Johnson has inspired hope, if not confidence, among observers and team officials both. As much as folks don't want to admit it sometimes, the Blazers point guard situation is still in flux. Johnson's performance was enough to pencil him in as a possible partial answer to that conundrum. "Possible" and "partial" aren't exactly ringing endorsements but given the lack of solid leads so far they look pretty good."
"Patty Mills had a nice enough week. His play will merit a second glance from the Blazers and other teams. But he shaded too heavily towards his own offense for a second-year player auditioning for point guard and that offense suffered when his shot wasn't on. His defense wasn't to Johnson's level either. If the Blazers keep four point guards then Mills should be on that list but I'm not sure he showed enough to make them keep a fourth guy at the position."
http://www.blazersedge.com/2010/7/19/1576307/summer-league-2010-review