I don't know what metric the parent comment is referring to, but in terms of technology stack, I can fully believe that the Romney team spent more than Obama's team. Here's a post by one of the creators of the fundraising platform:
I actually had that post in my mind when writing my reply, but I assumed r00fus was referring to ORCA and Narwhal specifically.
> ... what the Obama team did for their Narwhal infrastructure - they staged outages and random failures to prepare for their big day, meanwhile Romney's team who outspent the Obama team at least an order of magnitude, had their system fail on e-day.
http://kylerush.net/blog/meet-the-obama-campaigns-250-millio...
The short of it is: they used static HTML generated by Jekyll and stored on S3.