I think it is too soon to say that. We shouldn't forget that a few months ago it was questionable whether Tiger would even be able to play the full year.
The biggest problem I see with Tiger is that each phase of his game has been good at one point or another this year, but he hasn't been able to put all of it together for a single tournament. Short game was great one tournament but he was wild off the tee; driving was good two weeks later but his putting failed; putter was good the tournament after that but his irons were off; etc. To me, that looks like a player coming off of a long layoff slowly regaining his game. At some point I think each phase will become more consistent so if he spends a week focusing on his driver, the other aspects of his game won't drop off. But I guess we'll see.
I should add that several other notable players are flirting with +10 with Tiger, including Jordan Spieth and Rory McIlroy