On Monday, November 11, 2013 11:17:09 PM UTC-5, comadrejo wrote:
Eastern/Timber Rattlesnakes are probably much deadlier than Golden
Lancehead Vipers, ditto with Mojave Rattlesnakes which are a hundred or
so miles south of Mammoth Mountain with has both a neurtoxin venom and
hemotoxin venom, compare to most vipers that only have hemotoxin venoms.

FWIW, wikipedia does say that "lanceheads are responsible for more human morbidity and deaths than any other group of snakes in either North or South America". I suppose when people think of the "deadliest" snake, they think of the one that kills the most people, but you're right this is a function of more things than just the venom - it's the delivery mechanism; the overlapping population densities of snakes, people, and medical workers; and more.

Dave