This.
If I come across a semi-decent enforcer in BS I WILL have to use Bio Rejuvination/Coon. This is irregardless of the enfo's level. I have had times where it has been a damn close fight between me and a 215 Enfo, this isn't due to my lack of gear or w/e as I am pretty well geared. It's due to the fact every hit lands and every perks lands and my blockers only stop one, maybe 2 of the many attacks an Enforcer can use.
The Enforcer toolset is definately on par with Advies in terms of survivability and 'Lol you did no dmg to me', just as Gate said.