The total commuting time should account for the time it would take to get to the train station, as well.
I lived in the south Brunswick / Kendall Park area about 4 yrs ago, & the traffic was pretty bad then ..........now much more so........during rush hour, it can take at least 30 mins to get to either New Brunswick or Princeton Junction.
The main access to either of these train stations is Rt 27 or Rt 1 ..........if you take the 'backroads' these can get pretty backed up as well.........even so, you'd have to traverse some part of Rt 27 or Rt 1.
Suggest you do a 'dry run' if you are seriously considering this property.
This means driving during rush hour to see how long getting to the train station may take.
The time taken by trains can be calculated by visiting http://www.NJtransit.com.
IMHO, staying on the easterly side of Rt 1 provides for a better commute for individuals commuting to NYC on a daily basis, unless contending with traffic is not an issue.
There are communities in West Windsor Plainsboro & even Robbinsville & Lawrence, which offer commuter shuttles to the train station.
In analyzying the market trends, one may also see that areas well connected with a public transportation system & a good school district, have retained home values, being less affected by the downturn,more so than others.