what are the pros and cons of either amp power specification?

What are the pros and cons of either amp: 1) an amp that is 100watts at 4 ohms and 50 watts into 8 ohms or 2) an amp that is rated at 75 watts into either 4 ohms and 8 ohms speakers?   For example,  the new POWERNODE 2021 is rated at 80 watts into 4 and 8 ohms where as the Sprout100 is rated at 100 watts into 4 ohms and 50 watts into 4 ohms.

thanks

RLJ