What physics engine has better performance?

What physics engine has the best performance in mobile games, the box2d with the option of accelerating in cocoonjs; or cocoonjs native?

I'm trying my best performance for mobile games, and do not know which option may be more advantageous.

If someone with some more experience with it can help me, would be very grateful.

Someone? russpuppy, could you help?

I'm not sure exactly, take a look at the paragraph under Conclusion at https://www.scirra.com/blog/132/more-ab ... ed-physics

Your best bet though is to just play around with your own project under different settings

But you have used which physics engine for your games?

 And you have used the option to accelerate the cocoonjs box2d?

yeah I think I've used cocoonjs native physics for some apps

Thanks russpuppy, this help a lot!

russpuppy , Can you teach me what the correct way to show the achievements? In my game when the score reaches at a certain value, an achievement should be enabled, but none of achievments ever worked.

it should be pretty straight forward, have you looked at the example capx from ludei?

russpuppy Well, I believe that the problem of achivements I could solve alone.

But I'm having a problem in displaying the score in google play games.

The values ​​that I submit there are something like " 34.12" ( a float number)

But the google play, displays something like "0.34"

Do you know how can I solve this problem?