I've had the privilege to hear you speak a couple times (and ask a few questions) and I thought your greatest strength was/is the following -
Take extremely complicated topics and succinctly and concisely boil it down to its fundamentals and present that in an easy-to-understand manner. Aka cut out the bullshit.
"You could parachute [Sam] into an island full of cannibals and come back in 5 years and he'd be the king." - PG 5.5 years ago[1]
[1] http://paulgraham.com/fundraising.html