Question about Top 5 content by number of watchers queries

I'm very confused as to how these queries differ:

with cte1 as (
  SELECT nds.content_id, nds.account_id, SUM(duration) as watched_minutes
  FROM netflix_content nc
  JOIN netflix_daily_streaming nds
      ON nc.content_id = nds.content_id 
  WHERE nds.date <= release_date + 28
  GROUP BY 1, 2
),
cte2 as (
  SELECT c1.content_id, COUNT(CASE WHEN watched_minutes > 600 THEN account_id ELSE NULL END) as uu_cnt
  FROM cte1 c1
  WHERE c1.watched_minutes > 600
  GROUP BY 1
  ORDER BY 2 DESC
)
SELECT *
FROM cte2
ORDER BY uu_cnt DESC
LIMIT 5

vs 

with cte1 as (
  SELECT nds.content_id, nds.account_id, SUM(duration) as watched_minutes
  FROM netflix_content nc
  JOIN netflix_daily_streaming nds
      ON nc.content_id = nds.content_id 
  WHERE nds.date <= DATE_ADD(nc.release_date, INTERVAL 28 DAY)
  GROUP BY 1, 2
),
cte2 as (
  SELECT c1.content_id, COUNT(CASE WHEN watched_minutes > 600 THEN account_id ELSE NULL END) as uu_cnt
  FROM cte1 c1
  WHERE c1.watched_minutes > 600
  GROUP BY 1
  ORDER BY 2 DESC
)
SELECT *
FROM cte2
ORDER BY uu_cnt DESC
LIMIT 5

The first one passes while the second one doesn't.  Does anyone have an explanation?