Can you explain what functionality Angular is missing that makes it a less complete framework than Ember? This premise keeps getting repeated here in the form of Angular being "simpler" -- if it's more simple, but offers the same functionality, I'd take that any day.
Nested views aren't in Angular. Also Angular doesn't really have models. It has data and dirty checking, but nothing a Rails dev would recognize as a model.
You can make a much more powerful argument by showing how nested views work in angular, rather than by making strong statements with nothing to back them up.
If nested views are in the basic Angular docs, it's even more strong. Don't just say someone is ignorant, show them how to not be ignorant any longer. It helps them, and makes you seem like less of a jerk.