I think the point here is we are comparing Menlo Park best case scenario to the Mission worst case scenario.
If you live in the upper mission you can take the J Bart or the 14, and walk for 15 min from Mission or Market. In total this would be about 40-50 min. Or you could bike the whole way which would be around 20 min.
If you live in the lower mission (which I did) you can take the 12 which should take you there in 20 + 10 min walk. But you could bike there in about 15.
I actually worked a bit closer and could walk in 20 min, which I often did, and didn’t bother with buses.
If you live in the upper mission you can take the J Bart or the 14, and walk for 15 min from Mission or Market. In total this would be about 40-50 min. Or you could bike the whole way which would be around 20 min.
If you live in the lower mission (which I did) you can take the 12 which should take you there in 20 + 10 min walk. But you could bike there in about 15.
I actually worked a bit closer and could walk in 20 min, which I often did, and didn’t bother with buses.