Hi, I believe every township has it pro elements...

what is your priority ? or what kind of elements u are looking for when u buy a house for ownstay ?

traffic in cyberjaya is pretty good so far, and I believe when u talk about traffic, u are travelling with a purpose...(work? Entertainment? Lifestye?)

Work
There are some job oppty in cyber (Just name a few - Experian, HP, IBM)
In case u working in KL Sentral, or KL city centre (45mins-1hour in the morning, thru mex)

Entertainment
Coffee shop like Starbucks, plan B, Old town or Mc Café, all can be access with less than 10mins drive
Dpulze Mall with TGV & Jaya grocer, 5-10mins drive
weekend to Pavillion or Mid Valley - 25-30mins

Lifestyle
Cyberjaya is a cycling & Joggling frenly place...this is good to illustrate Cyberjaya have wide road and the traffic Is not too bad.

Of cos to be fair there are many Cons too....but since u only asked about the pro and concern about the traffic, that's all I can say. Best is come visit by yourself, see weather u like the environment or not.