For what its worth, I have 2 cell phones, iPad, one wired Wii U, one wiireless Wii U, wireless Wii, wired PC and my Xbox 360. Granted they dont use the upload side of my interwebz as much as my xbox. Last night my boys were streaming netflix on their wired Wii U, pc, ipad, phones were all on while I was playing xbox and the servers I was playing on ran smoothly.
I was 52-7 on one server before I was kicked by an admin. Lol, badmins