I hate to disagree, but when you bring up the name Ferreira to a Sampras fan, it instantly comes to mind that the guy beat Pete many times, just like Krajecik....hated to see him on Pete's side of the draw. So when someone beats someone that you are a fan of, you instantly remember, no matter where your favorite players is in his career. However, the important thing one needs to know is that Pete finally overcame Krajecik and Ferreira, and Andy (as good as he is) always has the opportunity to play his A game and beat any opponent he plays.
A fan remembers of course but not the general fans. They probably remember the beating Pete took from Krajicek in 1996. Pete was the king of grass and Kraijcek was the only guy to stop him in straight sets. That was HUGE. The trouble Pete had with Ferreira completely fades when you compare that with that of Krajicek's. And the H2H is still in Krajicek's favour (6-4), mind you where as against Ferrira, it's 7-6 Sampras. I must admit though that I was sick and tired of both though I had a lot of respect for Krajicek, but he had a thing against Sampras just Berdych has against Andy. He could be a prick that way.
Anyway, Andy will have to put a firm distance between the two and get the H2H straight.