You should export your app via Cordova
and see which one is better.
Just remember that Cocoon.io is still in beta...
Beta...yes. Don't overlook that. You don't want Cocoon as your only usable export option.
Also, Canvas+ does lack a few features vs a full browser engine, such as WebAudio.
And, technically, Scirra isn't supporting Canvas+ anymore. We already have to tweak some code in the engine to get things working right. Really wish Ashley would at least consider rolling in patches from the community.
However, if you can live with it's few shortcomings, the perf is wonderful, and with cordova support now, it's very extendable.
Still, you should try to get your game working passably with cwalk 14, at least on more powerful devices. It still ***** on weaker ones, so don't expect your game to become a smash in third world countries if it's crosswalk only. <img src="{SMILIES_PATH}/icon_e_wink.gif" alt=";)" title="Wink">
[Cocoon] only supports only ARM
Crosswalk is slow and big but supports ARM and Intel
x86? Android?
. . .
<img src="{SMILIES_PATH}/icon_lol.gif" alt=":lol:" title="Laughing">
http://hwstats.unity3d.com/mobile/cpu.html