"Dragon_First_1" has posted a detailed analysis of the forces which have actually succeeded in getting out of the Debaltsevo Cauldron. The original Russian text is here:
http://dragon-first-1.livejournal.com/22839.html
The Google machine translation is here:
https://translate.google.com/translate?sl=ru&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fdragon-first-1.livejournal.com%2F22839.html&edit-text=
Novorussian sources estimate the number of killed junta forces at about 3'500.