Luck would equal Marino since they were both top overall picks, both Stanford guys, and both were the super athletic QB that could scramble.
Wilson would compare to Marino, because a lot of people didn't think he was going to be that good. To many, Marino was a one trick pony (his quick release) and he just kept dropping and dropping in the draft.
RG3 and Wilson are also both comparable to Elway, who was seen as a great athlete. Wilson compares to Elway in that he also played pro baseball. But there were not any doubts that I remember being thrown around about any part of Elway's game. The only doubts you heard were about his attitude because of his flat-out refusal to play for Baltimore and forcing the trade to Denver. He was labeled as a whiner and painted very much in the same way as Eli Manning was on draft day when he threw his little fit. Jack Elway stepped up and worked as his son's spokesman just like Archie Manning did for Eli. You didn't see Andrew Luck's dad making too much noise about where he wanted to play in the run-up to the draft. He was busy doing his own job as the AD at West Virginia, but Oliver Luck and Jack Elway were both well known guys who had sons that played as All Americans at Stanford and were seen as the first overall pick from about day one of their last college season (if not earlier).
The era when all of those QB's came in 83 was much different. QB's weren't normally scramblers (this is what set Elway apart... he wasn't Michael Vick, but he could run out of trouble and was a tremendous athlete). Elway had a pretty wretched rookie season in a lot of ways. Luck's rookie season if compared to anybody's would be compared to Marino's. The USFL was around too, which made things even more weird, and Jim Kelly didn't end up playing in the NFL until 1986 I believe. There were a few good QB's that went to the USFL, along with some good running backs (Craig James, Mike Rozier, etc.). Times were just different, and QB's were used differently then. It's really hard to connect the lines and make direct comparisons. I think Andrew Luck has been compared to Elway since he was in high school though.