If you can do TFB HM, you can do the first 6 bosses in S&V.
HM TfB seemed to be undertuned to me.
When 2.0 dropped, a handful of my guild went into TfB just to see what it was like. Most everyone was in 63 gear with a few Black Market pieces from HM FPs. Each encounter was remarkably easy, even with sloppy pulls and mistakes. We one shot all the bosses until The Terror, where we finally had to sit up and pay attention.
HM SV was another story entirely. I'm sure this largely due to unfamiliarity with the mechanics, but it really seems to me that HM TfB could use a boost in terms of difficulty to being it up to par with S&V.