Board Thread:Questions and Answers/@comment-35325345-20180429150003/@comment-35353971-20180429185937

No, it does get the increased strength from added levels.

Think of True Form evolutions.

Of course, the True Form can be unlocked at Level 30, but using gacha you can still get it past level 30 without unlocking the True Form. Think of a level 30+4 Paris. Those extra four levels will increase its strength, despite the fact that you have not yet used Catfruit to get Cyborg Cat. And Paris doesn't get weaker than Cyborg once you have Cyborg, it still has the same stats.

This same rule applies to normal~evolved forms. Your Momotaro still has their boost in stats from those other 16 levels.

Hope this helped.