Thirty years ago you could not have gave me two AR-15 rifles for a Mini-14. I believed all the hype about them being Mattel toys and all and all worthless junk. I don't know why I did as I never owned one or even shot one, but all the big name gun writers hated them back then so I did too.
Now, different story. Oh, I have lots of Rugers. Love them all. 22 caliber all the way to .458 Magnum but no Mini-14. A few years ago I saw how an accurized AR-15 would work on 500+ yard praire dogs and it worked well. Next year I had my own. So much so that if I had to take only one rifle with me on a pasture poodle shoot it would be my AR. Mini 14 rifles will work for dog shooting if you spend A Lot of money on them. And then limit your shots to 250 yards or so and even then be prepared to lose a few.
So, the question is, why bother with a Mini? Sure they are pretty durable, and I even like the way they look, but my AR is dead nuts reliable, and shoots 5 into a dime a 100 yards. What more do you need?