It was an option but not the best. I was on Wall St. and then later Jersey City.
The train takes you to midtown, then you have to hop a subway, extending the commute time and expense. The bus takes you directly to lower manhatten. In JC, the bus dropped me blocks from work. Train would have dropped in Newark, followed by PATH to JC. And both train scenarios extend my personal drive time by almost 30 minutes (to trenton, unless you want to mess with Phila and bridge toll and parking).
On balance, the bus was the best option. Drive, park, free parking. Also, most of the trains out of trenton for that trip were NJTransit and those seats DO NOT RECLINE! So, no comfort benefit there. And the Amtrak is cost prohibitive.