If considering price, Z13 Max+ 395 or discreet graphics?

Trying to make a purchase decision comparing a $2,200 Z13 with Max+ 395 32GB vs a $1,400 Legion 5i with Core i9 24-Core, 32GB RAM, RTX 4070 8GB.

What are the benefits in picking the Z13? Battery life is probably a big one, what about gaming performance in terms of the extra graphics memory and memory speed?