User blog comment:So-Pro Warrior/Special Sneak Preview of Season 2: Battle of the Ultimate Galaxy Savers: Master Chief vs. Commander Shepard/@comment-5465602-20130613033157/@comment-5465602-20130613054204

An interesting point on his leadership, but Shepard is still a superior leader regardless. Chief  never seemed good with anything above squad-level leadership in the Halo books i read, while Shepard did that schizz with platoons i said earlier, alongside his raid on the Collector base being an example of it as well.

I believe you are right about Kai Leng;'s skills against Chief's though. ME3 does a terrible job of properly showing what Kai Leng can do. However, it can be noted that Shepard still beat Kai Leng generally with lightish support from his squad.