More dangerous lol
Here's the baseline study by the group:
Homegrown Extremism: Deadly Attacks Since 9/11 | The International Security Program
And not only that, they are really, really stretching the homegrown, ultra right wing (their words, not mine) extremist involvement. Do you even check the links?
Here's a couple of examples of their "homegrown extremism"
Homegrown Extremism: Terror Plot | The International Security Program
Homegrown Extremism: Terror Plot | The International Security Program
And of course, they only go by numbers killed and certainly not injured. I mean, why let something that minor get in the way of downplaying the role of radical Islam in the Boston Marathon bombing? Or the 30 injured at Fort Hood.
Your attempts at "proof" are an utter fail on your part.