I feel the same way, but I guess I just channel all that energy into my brain and fingers and they go to work. It could also be due to the amount I drink as you become more tolerant,
Caffeine effects everyone differently.
it may be that you have a very fast mobilization which would results in faster absorption of caffeine.
It may be that you use lots of cream in your coffee which has a high fat content and allow caffeine to absorb better.