I want to share an awesome experience with you guys!
Some days ago I bought Burnout Paradise for PlayStation 3 and yesterday Björn and I finally got to play against each other online.
We had an excellent two hour gaming session using, in my end, mobile broadband and a HUAWEI B970 router with wifi connection to the PlayStation. At the same time we used a Skype call via laptops to speak with each other while playing.
At no time during this gaming session did I experience any glitch with the connection. In other words, it is possible to use mobile broadband connections for playing intensive games online. I must admit I was quite amazed.