First... there is no such thing as a right-wing "radical" - they are reactionary, not "radical."
Second... no, they are not better at organizing. On the contrary - there's a really good reason why there just isn't that many examples of grass-roots far-right insurgencies the right-wingers can brag about. They are absolutely terrible at it. They don't just require levels of institutional support, benefaction and funding that anti-fascist groups couldn't dream off... most importantly, they require direction. Who would have thunk that the far-right have lots of difficulty thinking for themselves, eh?
All you have to do is to look at the (so-called) "Contras" that Reagen gave all that support to - if it wasn't for the CIA literally stuffing them full of arms, cash, intelligence, and on top of that constantly telling them what to do, they wouldn't have lasted a month.
A more glaring example is that of the (so-called) "Boeremag" from South Africa - a group of white supremacist terrorists that included many combat-experienced vets not just from the Border War, but also plenty of paramilitaries and police experienced in the violence that propped up the Apartheid-regime. A lot of them were high-ranking members of the above-mentioned organisations, and they also had access to military-grade equipment. Yet the plans they drew up were so laughably disconnected from reality that their organisation were easily rounded-up and thrown in prison after they launched a few bombing attacks.
That's what happens when right-wing terrorists don't get support and direction from above.