the demo you posted has bugs too...i tested it many times and even up till today there are some real issues on it. the 2 systems should not be mentioned on the same page as in quality of script,coding and support they are far from each other
just an example : comment can randomly give you an error page, reply is sent but no refresh/indication so user is pressing button 10times,etc etc and these are the same for almost half a year if not more.
Chevereto is slowly (from some perspective) but steadily growing. if you just check the amount of updates and features that has been added in the same time you will see the difference. the communication bit has been talked about many times and there are priority bits that needs to be sorted out first. please be patient and grow your community. comment code can be added already like facebook for viral coomunication.
hope this helps
thx