Titanfall for sure, but if it's not then EA is going to be very disappointed. The Call of Duty killer and right now it has less than 25,000 preorders in the US.
When does it release? Commercials out yet? I'm sure the sells will pick up besides it's not like it's releasing on 360s user base. People are still deciding which to get. Some may be Christmas gifts or some may get the heavy out of the way 1st(system) and later start buying.