The Original Shinkansens did look like a bullet, but newer designs like the 700 series moved away from that design. But the name "bullet train" has stuck for any high speed train in the world, even though they might not look like bullets anymore.
Shanghai are ahead on speed of this over 40 year old technology
Is that really a fair comparison? Just because technology is old doesn't mean it can't do the work.
Shanghai uses a maglev train technology, which is totally incompatable with any exisiting rail network or tracks. Current Shinkansen trains use standard-guage which in theory can connect to regular tracks used by any standard guage railroad. There's talk about making the Chuo Shinkansen Maglev, but I think its better to use current technolgy (thats another story).
A regular service 500 series Shinkansen runs around 300 kmh yes slower than a regular service Shanghai malev, but it does not mention regular service shinkansen trains are substantually longer, carry much more passengers, and travel further distances.
LOL sorry off topic for a bit there.
Back to the interary,
I would have to say if you plan to visit Kyoto on a future trip, then skip it this time, you could probably use that extra day to go out to do the museum tour located in Western Tokyo, and any other items you might of missed in the Tokyo area.