Almost 10 days passed since release of my simple platformer game, so I have a few words of summary about Construct 2 and Android export options.
+ it loads quite fast (4 seconds)
+ it has smaller APK
+ game looks smooth, enemies moves smooth
+ interstitials with MoPub are complete tragedy
In last 24 hours I had over 3000 ad requests, but only 11-12% fillrate from AdMob. I also used backfill from MoPub Marketplace. Unfortunetly clicks from MoPub are terrible joke (I had setup min. 1 eCPM and got clicks worth less than 1 cent. EDIT: after refresh it seems that CPC usually was 1c). In summary all fillrate = 27%. But money from AdMob is 3x bigger than pennies from MoPub Marketplace.
So is it worth to make game with CocoonJS + MoPub + AdMob interstitials? Absolutely not. This is one of the bigger mistakes in my dev history.
+ it loads longer
+ it has bigger APK
+ game does not look 100% smooth, I see microjittering in enemies movement, in background movement and so on
In general game works well, but micro-jittering is visible. And it's not nice to play platformer game with visible jittering. But Crosswalk has native AdMob And much better eCPM and fillrate.
Of course I could still use normal banners with CocoonJS, but it also has weak fillrate (40-50%) comparing to native/Crosswalk apps (90-99%), and just looks worse.
Summing up: I think I have made OK game, but I can't earn on CocoonJS with AdMob interstitials and I don't want to release game with micro-jittering. Ehh...