Show me where I called that Spurs team an all-time great team? I said one of the best in recent memory, so while I get while you could have interpreted that as such, I did not intend to insinuate that they were the '96 Bulls.
I didn't click on your links because I already went back and looked at all the game logs before responding to your post. I'm not sure how you can say he did not play below his standards when he averaged 45 a game the series prior against Cleveland and then 27 a game in the Detroit series. Over the same amount of games he scored nearly 100 fewer points. In '89 he averaged 38 a game in the series against Cleveland and New York and then 30 against Detroit. Both times, his field goal percentage dropped, and in games four and five against Detroit - with his team nursing a 2-1 series lead - Michael hit a combined nine field goals. If that sounds familiar it's because it's basically the same thing that happened to LeBron against Boston in 2010 and he got killed for it.
None of those stats are likely to depict Duncan as a top 10 or 15 player for the reason that he played 30 minutes a game. In those 30 minutes, he averaged 18 points, 10 rebounds, 3 assists, and 3 blocks per game while ranking in the top ten in defensive wins shares, defensive rating, and defensive box +/-. By the time the Spurs reached the finals those minutes restrictions were waived and the point became moot.