You leaving out LeBron in the second sentence and Andy out completely made the point incongruent. Your point has little merit if you're going to say, "Spurs have Parker/Gino/RJ/Duncan who have had finals experience or won the finals, while the Cavs only have Shaq, LeBron, and Varejao."
That's not much of a difference at all. Both teams have multiple guys with finals experience. So why draw the distinction at all? You leaving out Andy in the first place and then forgetting to mention LeBron initially is why you drew the distinction, otherwise, it's not much of a distinction at all.
Your opinion. I don't think 2008 Duncan was in his best years of his prime. But, I don't call him "past his prime" just yet. I'd call him at the tail end of his prime. But, that's a difference in opinion then. The 2008 playoffs still saw a Tim Duncan average 20 points and 14.5 rebounds. His career playoff numbers are 23 points and 12.6 rebounds.
But, if you say so.
That's part of my point. Shaq would make Duncan work harder than almost any other big man. When the two met in the playoffs when both were in their prime, Shaq's teams often held Duncan under 50%. Hard to break down every single possession of every single game to know how well Shaq defended Duncan. But, Tim shooting over 50% on Shaq is no guarantee at all.
Neither Finley or RJ would have a field day against LeBron. Stop it. Dice in his prime didn't have the consistent jump shot he has now. Varejao or Shaq could force him to shoot jumpers. Parker is an adequate defender. None of those guys would completely shut down any of them, but you're talking like each would be scoring 40 points a game on 80% FG shooting. You need to really think about what you're arguing. Tony Parker would have a very good advantage. But, as long as Mo Williams counters offensively, which he will get plenty of open looks, that match-up won't kill the Cavs.
The Spurs would not be able to contain Shaq or LeBron at all, not even remotely. And, because of that, Mo Williams and Anthony Parker will get plenty of open looks. Anthony Parker is a career 41.5% three point shooter. Mo Williams over 38% from three point range. They're not stopping Shaq. They're not stopping LeBron. They have very good jump-shooters for kick-outs. What's stopping Shaq and LeBron from dunking 25 times each in a game? Duncan, RJ/Finley will foul out in the first 5 minutes of the game. No, no team is beating a team that has Shaq in his prime AND LeBron in his prime. It's not happening.