Dude that statement was incorrect in so many ways.
Firstly Big sky way outranks Bridger Bowl in terrain offered. The A-Z Chutes, South Face, the Bowl, and the challenger chair area solidifies my statement on that one. Schlaushman's lift is a nice new addition to the resort now, but you need at least beacon to be able to ride the chair. If you don't you're shit out of luck.
Tracked out faster? Bullshit. While more people may go to Big sky than Bridger on weekends, it definitely has less people per square acre. There have even been instances at Bridger where they have turned cars away from the parking lot since there were so many people. Because it attracts so much of the college crowd, a powder day gets tracked out quickly. The Schlaushman's lift definitely weeds out the less experienced skiers, but with the amount of hardcore skiers at Bridger, there are still crowds to be had.
Ticket prices are definitely in Bridger's favor. On any budget, Bridger will definitely be the better choice. Big Sky is quite pricey for most people, and unless you plan on getting a season pass there, prob not worth it for a single day event.
Local vibes also go to Bridger. Can't top that with Big Sky.
So for your trip, go for most of the days at bridger, with maybe a day or two at Big Sky to mix things up a bit. Just don't ask eheath for help on this...