I think Tiger essentially downplayed any grandiosity regarding his return. From the tone of what I read, it would simply be incredible for him if he can ever make it back physically to swinging a club and walking a golf course four days in a row.
And I think ultimately that's the only realistic expectation anyone could possibly have. Lest we forget that the accident aside, he also underwent a spinal fusion just prior to the automobile accident that almost killed him. Not to mention that he's closer to 50 than he is 40.