A watt is a joule per second. It is not “directly convertable” any more than mile is the not a speed just because you can divide it by an hour.
Watts are power, the rate at which you can work. Joules are units of energy, how much work you can do.
He is not fucking up the numbers. He is fucking up the units…and so are you
What are Cadet Bone Spurs thoughts on this? Oh yeah, he thinks veterans are suckers.