Yes however the emblem tracker is coming straight from bungie in game. The destiny tracker app has 2 stats. Kdr and kda. The kda doesn't match up so i can bet that the kdr doesn't either. I will always use the ingame measurements cause that is most likely what bungie uses in terms of matchmaking otherwise they would have a stat hanging around with kdr.
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It also separates it by season. The kd trackers on the emblems are per season but the web ones are usually all time or per Playlist.