http://www.opensecrets.org/pres08/summary.php?id=n00006424
O.K., the numbers are somewhat in the range you quoted, yet the chart shows he spent close to 300 million.
I am pretty sure, and think even a con such as yourself would agree, that Obama won for reasons other than spending. Reasons such as; Palin (sarin) Mccains treason in Vietnam, Mccains involvement in the Keating scandal, the fact that NO republican could have possibly won in '08, etc. Of course I was not bothered by Mccains, stupid voluntary choice, it helped ensure he wouldn't make other stupid choices as president.
So, you have picked two contests as proof, yet both were almost predetermined before they began.
Hardly evidence that spending vast sums of cash cannot influence an election.