Had a weird Operations game earlier where I jumped in just after it started and got completely reamed attacking points about 7 times in a row - now that's not necessarily unexpected, I'm not amazing by any stretch but I thought 'weird I must be off my game this morning, I'll wonder if the teams are balanced'.
Top 11 players on my side: snipers. Nearly half the entire team were snipers, and they were all bunched up in huge groups right back at the spawn point, leaving anyone who was actually able to contribute anything to the round to get completely destroyed. Some guy on the other team rightly switched to the mortar playbook and was wiping them out in packs of 3 of 4 a time, it was embarrassing.
Naturally I bailed out 5 minutes later and joined a 'proper' game, but it probably doesn't give a very good impression to new players of the game. I'm not really for forcefully limiting player classes (yet!) but you can't even avoid these games as there doesn't appear to be any way of identifying them before joining (which takes fucking ages on a PS4).