I just did some analysis using 2 of my saves with the same settings, one an Angels save in 2027 and the other a Nats save in 2032.
The 2027 save has 26% of pitchers with stuff ratings in the 50s, 2032 has just 21%.
So relative to the 2027 save, 2032 has 20% less pitchers with stuff in the 50s.
In the 2027 save 38% of pitchers have a stuff rating of 50 or above, 2032 has just 34%. Relative to the 2027 save, 2032 has 10% less pitchers with stuff rating of 50 or above.