With B, I'd go slowdown -- your higher staminas should translate into your better players being able to stay on the floor for a greater period of time, which is probably where your best bet for an upset lies if you're otherwise clearly worse.
In the case of A, it's probably dependent on how your advantage breaks down. I tend to look at my advantage among the starting five, the difference between the first three guys off the bench and then the roster as a whole. If the bulk of my supremacy comes because I have a stronger bench, then I want to lace them up and run. If my biggest area of edge is toward the top or middle, then I'd go normal.