Yes. Speed is highly tied to capacity. Saturation at 6,000 vs 40,000 passengers makes a large difference. Queuing will begin much faster on a road. Queuing is not good for speed. That is why people are dependent in mumbai are dependent on the Bombay Railway. Its faster and more dependable than driving through their congested roads.
"Further more, if you had the entire NYC take public transportation rather personal, you'd forever have delays, delays and delays."
This. Right here. keyword "Rather" This implies you think all public transport would handle a higher load factor with inferior performance to all private transport. This suggests you think private transport can handle capacity and reliability better as well as the qualities you've indicated before in the thread: speed, monetary cost, and convenience. That sounds like every applicable consideration in transportation.
Excluding those factors how is it possible to suggest that there would still be cases where a car is not the ideal "100 percent better" choice?