There are actually so many factors you can't compare your solar panels and electricity consumption with random strangers on the internet.

• he might live much further away from equator than you or just in an area with a lot of cloudy days

• he might have electric heating so his consumption is much higher

• his roof might be much smaller than yours

• his modules might be older so producing not as much power per square foot/meter

• might have larger family or simply different lifestyle with more cooking/ night activity

• he might have an electric car