You miss the point. If SVB fails to win a world title before he retires, will he ever be classed as being a world class player? In 30 year's time, AZB nerds will be unanimous over Strickland and Archer, but less so over SVB. Perceptions change with time.
I actually fear for SVB. If he decides he can't be bothered to play pool for 10 hours a day any more, and goes into a slow decline, the backlash will be horrible. He has too much pressure and expectation on his shoulders.
I guess that's a "no" to my friendly wager. Well, offer still stands.
To answer your question, I think he is a world class player ALREADY. He just cannot be called a world champion (yet), at least not in 8b or 9b. Although in this debate I agree with, or at least understand, some of your other points, the suggestion that SVB is not yet a world class player is frankly untenable.
But I DO agree with the assertion that his legacy will have an asterisk next to it if he never wins one of the select World titles. I liken his current status with that of Phil Mickelson of golf. He had been in the PGA for 12 years and had won everything BUT a major championship. He was virtually unanimously regarded as the 2nd best player in the world (behind Tiger). But with a player of his talent it was basically inevitable that he would eventually win one. Now he has won 5 and people often forget how much flak he took from the media all those years. Talent has a way of overcoming luck eventually. Shane hasn't won a world title overseas, but its not like he's played awfully either. He has finished in the top 5 in several of them, it's just a matter of time before he wins one. He's only like 30 years old, and still improving imo.