I've always thought any outrageous celebration was an act. Why? Well, these guys have been playing and winning for decades so it's nothing really new to beat each other; especially when they have played each other numerous times (Fed/Rafa/Nole/Muzz/etc.).
To me, it just seems like one big act.
The only one that I believe was actually genuine was Fed's 09 FO title....
Bullfan, "Bull rap, there is video evidence." and "Dude it's on the Internet, and hasn't been hidden."