Are you suggesting a 10% rev miss wouldn't be material?
Assuming they hit the stated GM, if they missed the mid point of their revenue number by 10% that could send them pretty close to an operating loss. If they miss the low end of their rev number by 10% they could actually suffer an operating loss.
If either of the above happen AND they miss their GM projections there will be blood in the streets (and in the financials) - I would consider that pretty material.
Not trying to be difficult here, but where are you coming up with the 10% figure?