I think the problem is that Scirra has created a fantastic product that is updated regularly. Beta every 2 weeks, stable every 6 appears to be the average.
CocoonJS keeps becoming more unstable as the product is updated. 1.3 was good. 1.4 was broken. 1.4.1 is slow.
The difference between the two companies? Construct2 is developed by a team of 3. CocoonJS is developed by a team of around 17.
Now, maybe that's not the main issue. Maybe CocoonJS is simply too complicated for regular updates. Maybe they're working on an awful lot of topics or products. Maybe that's just what people are not happy about.
Personally, my problem is the lack of communication or transparency. There's a problem with C2, and we get a post on the forum, twitter, facebook, and even emails if necessary. If the problem is serious, it's fixed as soon as possible, even with the team working overtime, and releasing a patch within a couple of days.
I can't recall the last time I heard from Ludei. Maybe I've missed some posts, who knows. However, if they popped up after the occasional release and said "Whoops, sorry to hear some of you are having problems! We'll fix it soon!"
I've been unable to use CocoonJS for over 3 months. So yeah, I'm afraid to say I'm a little impatient now.