Yes they can but they can only have one online at a time. Like when I played Split-Screen with my friend it say @Roadkillers while my origanal user name was Roadkillers.

... how does that suggest 200k people had the game if 74k are online?

Am I missing an imaginary calculation? 

Also note that you can only use the split screen feature on non-ranked servers. Even further, non-ranked servers that have splits creen enabled.

When you're playing split screen, the other player(s) on your console will show up with the customizations you chose and their name will be yours, but with a (1), (2), ect next to it.

To further expand on Roadkillers post, it would look like

Roadkillers
(1)Roadkillers
ect.

THE TOTAL NUMBER OF PEOPLE ON IN THE LEADER BOARDS ARE 65,579!

Though there are more people online then that because there are lots of people who dont go into ranked matches and plus the servers are glitched up and some people who should be on arnt.

I thought I had figured it out after getting into to two ranked servers twice at different times today, but it didn't work when I tried it a third time.

 the problem is that theres to little ranked servers

 yea theres like 800+ servers mostly all full. There is way more then 67k. Most servers contain 8 to 32 people. 

How do you get into the blue servers? Yo man Schnacky play a game with me I played 2 24 player matches and got 3rd each time. My first 2 games.