Well, his outside shooting was pretty much dominating you. Your man to man defense just wasn't strong enough to stop him on the three pointers...he got 9-20!
And while your inside game was clearly dominant, I think this is a case of his perimeter defense stopping good passes from your guards. Your offensive flow is pretty low and it ended up in wasted possessions, like your SG shooting 11 shots when he was clearly outmatched...
You would probably win that game most of the time, luck just beat you I suppose...
just my opinion though, as I don't have enough experience to say anything with real confidence...