What am I Missing? WH vs LS Gas Prices

So I like to huff Lowsec gas, it pays the bills. Was looking at moving into wormhole gas huffing as folks are always talking about how much ISK they make.

Looking at the market prices though, Fullerite is trading WAY lower than even the cheapest Mykoseroci per unit.

What am I missing? why go through the risk of sitting on a WH cloud for 40 min to fill-up a venture for a fraction of the ISK/h of LS gas ?

Fullerite-C540 ~44.82k ISK
Viridian Mykoseroci ~ 92.58k ISK