the platform behavior settings depend on the 'dimensions' of your game.
Means, You need to set up related to you games block & player size (64,128, ?).
Take a look/try at mario1 -
how high does mario jump (in blocks) and how fast did he return to the ground?
Then create a stack of blocks and adjust 'jump strength', 'gravity' and 'max fall speed'* to get the same result
*) set to a high value and reduce in the end
Next do the same with the X-distance (max speed, accelleration, decelleration).
You will see - it's simple an somtimes much fun to play with parameters like this ;)