Sure, if you're looking at the final dollar amount.
Other factors need to come into play when you own a home. My rent was about $1000/month with utilities for about 1000 sq. feet. I now pay a mortgage of $1375/month + about $75 in average monthly utilities. But with that I get a home with 1600 sq. feet living space, not including the finished attic or the unfinished basement and the 7500 sq. foot lot I now have to mow, minus the garage and house space. Per sq. foot of space, you're likely to do really well, if space is what you need.
There are three main reasons I bought: 1) I have a young daughter and I thought she might like a yard. 2) I'm tired of the noise from apartments and 3) the interest rates were about as close to free as I think they'll get for a long time and I plan to stick around here for at least the next decade or so.
In your case, you might not need the space or want the hassle of maintenance.
Personally I think making the rent vs. buy argument into an investment argument is ultimately worthless. There are better investments out there, like your time. Shelter is not an investment, it's a basic human need. Buy/rent exactly what you need and nothing more. It's a lifestyle choice. Put your money to work in real markets.
Living in a geodesic dome will probably ruin your social life, but if you don't need a social life, great!