Sorry, he probably wouldn't. Federer has more strengths and less weaknesses than Sampras and he is behind the block to Djokovic and Rafa. Sampras' backhand is much weaker than federer's. People would just target it and hit heaps of spin until it breaks down just like they do to fed. Watch that video you posted, everything to his backhand he runs around to avoid hitting it. He did this when guys weren't using crazy poly spin strings. Imagine what guys would do now to his backhand. There's only so much running around your weakness you can do until people start to yo-yo you side to side and you can't run around it anymore. You love sampras, doesn't mean you can make stuff up like RAFA2005RG just to give a nod to your guy. I would never give something an unfair bias unless it earned proper recognition.
If Sampras was developing in the current era, would he have perhaps kept his 2hbh and if so, what kind of difference would that make? I still say Sampras would be a massive beast in this era. Talent is talent.