So lets take a look at the parse here, this guy heals himself with FIB for 524 per hit. Shadows get a 2% self heal in full balance spec.
So if one does a reverse calculation, if we let his HP be x, his FIB will initially heal for 0.02*x.
On another thread, http://www.swtor.com/community/showthread.php?t=535526 , we can assume that companions provide an extra 2% heal buff. Which works out to be: 1.02*0.02*x=524. x will then be equals to 25686.27451 HP.
So I was wondering how would a dps Shadow have over 25k HP, have FIB hit for 4.3k avg and parse over 2k? This parser also shows this guy has uncanny accuracy with a 0.84%. So... Hax maybe?
(Apologize for the wall of text/math)