am I the only one who doesnt find the sites that similar after all? Or to put it another way - neither of them seem particularly unique (fixed header, slider on top, broad sections and large footer) compared to many marketing sites these days?
You're not alone. In fact, at first I thought their sites were standard Wordpress templates. I was kind of surprised they actually built them by hand. They both consist solely of what I would consider standard elements and layouts.
Based on the fact they use:
* Make use of both the Yoast SEO and Gravity Forms plugins, which are well known Wordpress plugins.
* Twitter Bootstrap
* Have an /assets/ folder which most likely rewrites to /wp-content/themes/themename/assets/
* Have a /plugins/ folder which most likely rewrites to /wp-content/plugins/