Luck doesn't have much to work with, idk where people get off on saying Luck has more talent around him than RGIII.
Luck has no real runningback help, He's got an absolutely terrible offensive line. The best WR in Indianapolis last year was Pierre Garcon (where's he playing now?). The Nature of Indianapolis' offense forces Luck to make more deep throws than he really should be, Analyst point out all the time how it seems like Indianapolis doesn't run underneath routes. The offensive coordinator has been pushing Luck to make big passing plays down the field (if IIRC He's leading the league in that stat, or at one point was, in 20+ yard passing plays) and he has delivered.
As for the Indianapolis Power House comment, Indianapolis' turnover this offseason was ridiculous, there's very very few guys who were part of the old regime that are still here. This is essentially a new team, With a new head coach, With a new Front Office Management, With new players taking over as key contributers. Dwight Freeney has slipped into relative obscurity while Robert Mathis has essentially turned into Indianapolis' #1 pass rusher. Defensive backs like Vontae Davis have given Indianapolis some corner play that we as fans haven't witnessed in a long, long time. Reggie Wayne has become the offensive leader this year (last year it was Pierre Garcon), while rookies like Dwayne Allen and T.Y. Hilton have shown much promise for the future.
I don't have to say who I believe is the best rookie this year because my fandom speaks for itself. I understand that I can't make an uninvested decision. But what I do know is this team was 2-14 last year, and their record would probably be about the damn same if Luck hadn't won us some games. He's shown incredible clutchness against teams this year and has legitimately put the team on his back on some game winning drives and won Indianapolis games. He's more athletic than anyone will give him credit for, and he's big and strong enough that he appears to be the type of guy with that ironman will. Andy luck hasn't sat out any games this year, the same can't be said about RGIII. Furthermore, RGIII's rookie backup comes in and puts up 3+ Bills and 2 Touchdowns against Cleveland and Washington doesn't seem to lose much of a step.
Chandler Harnish probably isn't going to be able to play at Andy Luck's level.
Homerism aside Indianapolis doesn't lean on Reggie Wayne, Dwayne Allen, T.Y. Hilton, Vick Ballard, or Donnie Avery. They lean on Andrew Luck, and live and die by Andrew Luck. Indianapolis doesn't give Luck a vanilla offense where he has a strong run game to lean on and can use things like read option to open up running and passing lanes, they've asked luck to make big plays all year, they've put a veteran load of responsiblity on him, and he has delivered.