I loaded up a creative world in both 1.13.2 and 1.14-Pre 5, placed and enchanting table with full set of books, and enchanted a full double chest (54 total) of diamond pickaxes.  The pickaxes that had two enchantments seem to be on par, but the frequency and quality of tools with three enchantments seems to have diminished.  Here are the results of all the pickaxes with 3 enchantments:

In 1.13.2, seven of the pickaxes had three enchantments.  I got 6 pickaxes with Efficiency IV, Unbreaking III & Fortune III.  The last pick had Efficiency IV, Unbreaking III & Silk Touch.

In 1.14-Pre 5 there were only 4 pickaxes with three enchantments.  Two of them had Efficiency IV, Unbreaking I & Fortune II; one had Unbreaking I, Efficiency IV & Silk Touch; and one had Unbreaking I, Efficiency III & Silk Touch.

At first glance, it seems that the tools from 1.14-Pre 5 are just receiving Unbreaking I instead of Unbreaking III, but none of them had Fortune III.  Also, of the remaining picks with two enchants, there were five from 1.13.2 that had Fortune III, and only two from 1.14-Pre 5 had it.