Lol this is where you advanced stat junkies are so off-base. This COMPLETELY lacks context and is highly misleading. From what I've seen about these particular numbers on Twitter, these statistics are based on the individual defensive matchups in the playoffs - you know, the defensive matchups where we do our best to HIDE IT all of the time.
So Smart's defense against the likes of Wade, Butler, Wall, Beal, Irving, Smith, and James are being compared to IT's defense on the likes of Rondo, MCW, Grant, Canaan, Porter, Beal, Oubre, and Smith. Real fair comparison there. That's essentially comparing how Smart plays defense against elite offensive players versus how IT plays defense against mostly scrubs and lesser offensive players. It's funny, why didn't you post virtually any other defensive statistic that rates IT near the very bottom of the league? Hmm.
Even for you, this is ridiculous to the point of trolling. Just watch the freaking games and use your own judgment on these players rather than quoting out of context stats to support your worldview.