I'll reprise how each man places among all first basemen to support my position that Clark belongs and Garvey doesn't:
Some folks like him for the HOF, but even with his off the field issues aside, I can't see it. If a guy is in the top 20 at his position (except pitcher), that essentially translates to the top 240 of all time (8 position players and 4 pitchers per team equals 12, then 20 * 12 = 240) Thus, even the 20th guy at a position is at best in the gray area for the HOF, since they haven't honored that many yet. What does this have to do with Steve Garvey? Well, look at where he ranks in various Win Shares categories: 26th in career WS among first basemen listed in the latest Historical Baseball Abstract, 44th for the total of his best 3 seasons, and 30th for his best 5 consecutive. The best he can do is 26th, which is well below where the gray area should be--and he does significantly worse than that overall.
His 330 career win shares is 13th among 1st basemen in the latest BJHA, 114th overall. His best 3 seasons in win shares is third among those first basemen. His best 5 consecutive seasosn in win shares is fourth among those first basemen.
Seen on a bumper sticker: If only closed minds came with closed mouths.
Some minds are like concrete--thoroughly mixed up and permanently set.