hard to decide

welcome! some say time is harder on the battery than miles. hard to be sure with no real studies, just reports here. i would probably go for the one i liked more, all else being equal, they are both great cars. all the best!

 

Interesting.
Going with the one you like the best...is the best ultimate advice.
But you've got an interesting dynamic here.

A newer, but high miles for it's age vehicle...vs. an older but lower miles for it's age vehicle.

Really, with any used Prius I would invest with the open knowledge that HV Battery replacement "might" become necessary. Then put that issue aside. And maybe also the money that might be needed for that replacement.
I think it's really hard to evaluate which battery might fail first or sooner. They both could fail tomorrow, or go years.

Then it really comes down to which you like the best.

On paper? Without hands on perspective. I think I'd be tempted to go with the older one, with much lower miles.
I guess my feeling is if you are sitting in the newer one, and already "feeling" like it has more wear and tear, it probably does...

Mileage vs. Time is an interesting debate, and sometimes I think the opposite decision can be good. BUT...you are talking about a very big gap between the two vehicles mileage.

Good Luck...and whatever you decide, don't look back.

 

There was a change in models in 2012 - I think they call it MY12. So they could actually be different models, both Gen 3.