Yes, coming from the UK, where my hours in academia were 37.5/week, I was surprised to learn (from my incorrect interpretation of the title) that those 2.5 hours/week I work here in the US were pointless.
I had one boss who had worked in the valley and the uk he said he got no more work out of the USA teams who worked longer hours and much less leave than he did in the UK where we where on civil service terms