Can you really count Fetisov, Hasek and Makarov in '83? All 3 were drafted in multiple drafts, and none of them showed up until 89.
"...guys like Gartner, Anderson, McCrimmon and Hunter..."? Those guys were damn good, and you overlook Carbonneau, Lindbergh, Foligno, Vaive, Hartsburg, Propp, Reinhart, Goulet, Lowe, Christian, Broten, Ogrodnick and Steen, among others. All of those guys went on to be key players for their repsective franchises.
However, I grant that '84 was fantastic and could be considered better.
'83 I simply find to be less impressive. Not as much depth and less star power at the top. A very good draft, but not on par with 79 or 84.
Hasek and Makarov were only drafted once, not multiple times. Fetisov was drafted in '78 and '83 so '83 was the last time he was drafted (by New Jersey) and that was the team he came over with. Comparing 1983 with 1979 (in alphabetical order):
NOTE: Only skaters with around 400+ career goals or 800+ career games were included.
1979
F: Glenn Anderson, Brent Ashton, Laurie Boschman, Neal Broten, Guy Carbonneau, Dave Christian, Mike Foligno, Mike Gartner, Michel Goulet, Dale Hunter, Tim Hunter, Mike Krushelnyski, Mark Messier, Mats Naslund, John Ogrodnick, Brian Propp, Thomas Steen, Rick Vaive
D: Ray Bourque, Keith Brown, Doug Crossman, Mark Hardy, Brad McCrimmon, Kevin Lowe, Rob Ramage, Mike Ramsey, Jay Wells
G: Pelle Lindbergh, Rollie Melanson, Rick Wamsley
1983
F: Pat LaFontaine, Russ Courtnall, Bob Errey, Dave Gagner, Stu Grimson, Petr Klima, Joey Kocur, Claude Lemieux, Dave Lowry, John MacLean, Sergei Makarov, Cam Neely, Bob Probert, Dan Quinn, Kevin Stevens, Esa Tikkanen, Rick Tocchet, Steve Yzerman, Peter Zezel
D: Tommy Albelin, Marc Bergevin, Jeff Beukeboom, Gerald Diduck, Viacheslav Fetisov, Garry Galley, Uwe Krupp, Frank Musil, Joe Reekie
G: Dominik Hasek, Tom Barrasso
1979 IMO has more one-way players who excelled at one aspect of the game. 1983 has more pests and enforcers, not to mention IMO a better group of "step it up for the playoffs" type of players. Forwards are about equal (maybe a slight edge to 1983). Defense is a clear win for 1979. Goalies are a clear win for 1983. Really the draft years IMO are incredibly close.