That's a problem through much of the list. Just because someone was one of the franchise's best picks, doesn't always mean that there was real skill and foresight involved.
Take Scott Wedman (#10) for example. Out of the next 8 players picked, 4 were nothing too special, 2 were 1-time all-stars, and 2 were repeat all-stars who were clearly a cut above. Wedman was marginal even as a 1-time all-star. So, basically, the FO had a 50-50 chance of getting an all-star that year, and they did, but not one of the better ones. I don't think of that as being a pick which displayed a remarkable amount of skill. It just happened to be a loaded draft.
Even though it was one of the best 2 years in the draft for the franchise, you could kind of question the skill vs luck in the Archibald pick, too. Yes, we got all-stars in BOTH the first and second round, something that never came close to happening in any other year. But the first round pick, while quite good, was clearly worse than the HOFer picked in the second round. Either the FO had a gift of prophecy, and knew that the best player in the entire draft would still be there in the second round, or they didn't really think that Archibald would be all that good.
In those days, with very few televised college games, no Internet (or anything even close), and team budgets that were tiny compared to now, scouting had to have been vastly weaker than it it's been in the post-MJ era. And you weren't going to make tens of millions off the perfect draft pick anyway... tickets started at a buck or two, and TV rights weren't worth much at all. So they muddled their way through it, without going to any great lengths to find the perfect player.
I think that half of our best players were probably picked by luck.