unrealistic on production?

[WilburMartin]

I still have all of my plants growing - in MS no less, and all are still budding/blooming.

That brings me to my query - how much production per plant should I expect? How much is average?

I guess that is a bit of an unknown, depending on cultivation practice, water/fertilize, climate, etc. I am also a container gardener.

I am southeast MS - terribly hot from early June through the beginning of October, and generally very humid.

From some plants, I ended up with about 12-15 per round of tomatoes (Creole, Sweet Carneros Pink). My Creole in on it's 3rd round of tomatoes. I got from 4-6 per plant on Mortgage Lifter and Pink Brandywine - now that it is cooler, the buds are blooming pretty heavily. The Pink Berkeley Tie Dye has yielded 5 between 2 plants, but lots of buds/blooms are on the plant currently.

Is that typical, or should I experiment with other tomato plants or techniques?