Well, it is better to have your security up to date. IMO, updates are always a bit of a crap shoot. Usually they are fine but certainly sometimes some can be affected and others not. I took the update and noticed no problems.
I've had other updates in the past and on other devices that caused me to need to do a factory data reset. if youre that concerned you could hold off till the March update and see if that brings a fix to those that suffered a battery hit with the February update. It's only another 3 weeks. What I noticed around the various forums is that more people seem to have no issues than those that did have issues. Your decision tho.