Different Box2D simulations (iPad / iPhone simulators)

Hello everyone,

I am using Cocos2d-x 2.1.4 and Box2D to create a physics based game targeting both Android and iOS
My problem is that the Physics simulation works differently when I test it on iPhone simulator and then the iPad simulator.

I just create a circular body and a triangular body falling down the triangular body is above the circular body. Both these bodies are dynamic.
There is a static ground at the bottom of the screen on which the bodies fall.

The simulation seems as if the bodies in the iPad are a lot more bulky than they are for the iPhone
I am using the same PTM_RATIO of 32.

The whole code is completely same for iPad and iPhone

Could there be something I am doing wrong ?
Do I have to change the dimensions of the body according to the device size to make sure they behave the same on all the devices ?

Thanks for your time!
Enjoy making games! :slight_smile: