Having rode the NJT buses and trains and light rail (& PATH train) I can say you are not missing anything with the bus. FYI: There are two different NJT bus types. A local with bench seating and standing areas, and long haul types with two seats on each side with a walkway in the middle.

While the long haul are more comfortable, I’d rather drive than take a bus. (But I’d much rather take a train than drive.)

On a final note, not sure where you live but since you mentioned Philly; the light rail from Camden to Trenton is a nice scenic trip if you ever have time or the need to ride it. It’s only about an hour each way (so long as there are no delays 😭)