Mine is, compared to an AR. If I shoot mine in damp weather, and then don't clean it after, the gas piston will rust shut. I have to do the garand stomp to break it loose. The stainless rifles don't have that problem. But, maybe that's another story.
The AR is designed to be serviced in the field. I don't worry about cleaning my AR's every time I shoot. When I do, it's simple and fast. You have to pull the barreled action out of the stock to do a full cleaning on a Mini. If you break a disconnector, or any other fire control part, you're screwed. The Mini just isn't a straight up alternative to the AR platform.
A Mini 30 is cool. I'm not really bashing them... just calling them for what they are. I'm not about to sell my Mini, but won't give it equal footing with my AR's when it come