The issue is Roger is 40 and done possibly winning anymore Grand Slams. I loved his game, and once he passed Sampras, he was the GOAT. I agree with Rafa, the fact 13 come on clay, just doesnt sit well for me.
Now I was a HUGE Agassi fan back in the day, so I hated Pete, but the more I watch Novak, the more I see him as a better version of Agassi. Those ground strokes and return of serves are amazing. And like Agassi his server sucked, but 3 or 4 years ago, Novak worked on his serve and its respectful now.
One other thing that Roger always had was fitness, lasting the 5 round games in the majors....but Novak is probably more fit, i know crazy, and his mental game is just so fucking strong.
I want to say Roger, but its really not. Novak will be the GOAT very soon if he isnt already. he is a good guy and does great things outside of tennis like Roger, so no problem with him taking the legacy.