Yeah it seems that you have:
-Strength of Jump
and
-Force of Gravity
Your strength of jump is high but so is your gravity so the character jumps as high as he should but then falls very fast.
If you decrease your strength of jump but also your force of gravity, you'll achieve the same jump but will be slightly 'floatier' and less weighted, which is more like what CV3 did.
Awesome parallax scrolling with the moon and the forest. Let's combine this with our
"Randomized Rooms Castlevania" idea and put it online, bwahahaha!