I don't know how Reed's resume is "much stronger" than Holt's.
Reed played for 16 years, and the second half of his career bled into the passer friendly era. It's not like he played in 1970. Holt played for 11 years. So hard to compare career totals.
Reed had four 1,000 yard seasons in 16 years. Holt had six consecutive years over 1,300 yards, multiple 1,600 yard seasons, and only dipped under 1,000 twice (rookie year & final year as a backup). Reed has only three 80+ catch seasons, while Holt only caught less than 80 balls three times. And Reed was the clear cut #1 WR for the majority of his career, while Holt was splitting balls with another potential HOF WR, and the greates pass catching RB of all time.
I don't think you can make the argument that Reed was ever the best WR during his era (even disqualifying Rice), but you can make that argument for Holt.
Reed played double the postseason games as Holt, so the better postseason numbers should be a given.