I switched from windows/dell to a 2019 16inch MBP Intel for work as I wanted everything MBPs promised, especially battery life. I was very dissapointed that I g

I switched from windows/dell to a 2019 16inch MBP Intel for work as I wanted everything MBPs promised, especially battery life. I was very dissapointed that I get about 2 hours on battery, but I suspect its mostly due to the MS office apps. Is this improved on the M1 versions? Surely high cpu usage there will still waste battery pretty quickly?