Let's leave that game 5 aside. Still, for the Suns to take the series they would have had to beat the Spurs 2 out of 2 times (games 5 and 7). Considering the Suns at full strength only managed to beat the Spurs 2 out of 5 times, one could estimate the odds of one such event happening at 40%. For that to happen twice, the odds would drop to 16%. And though I admit one cannot make such oversimplification of an inherently complex matter, I think that's much closer to reality than that one that assumes because a short handed Suns team put up a fight, a full strength team would have beaten the Spurs. You never know. Maybe they wouldn't have been motivated enough, maybe the starters would have played worse than the backups. , I think it's pretty clear Marion's performances were all significantly less impressive when Stoudemire was on the court, and Kurt Thomas wouldn't have had the chance to contribute as much. And that doesn't even take into account the additional game they would have had to win. So maybe things could have gone different, more than likely not. But where does the certainty the Suns would have moved on come from, I'm not quite sure.