No, its exactly like the iPhone market. You'll see many manufacturers produce many units selling more tablets then the iPad because people enjoy freedom and the opportunity to choose a tablet that suits their needs.
Apple is enjoying great success with the iPad at the moment because they are the only game in town. As more and more android tablets hit the streets you'll start seeing a shift in market share
People like choice, but there is a point at which the benefit of added choice isn't worth the cost of putting out in the market and it begins to confuse prospective consumers. This is the law of diminishing returns. The Android platform is approaching that level. After a certain point, flooding the market with more models is not going to do the consumer any good. It will confuse consumers and the OEMs will drag down their profits.
Also, the iPad is still the cheapest tablet on the market in its class. I'm not counting uber-cheap tablets like the Coby Kyros. In spite of being so inexpensive, Apple is still able to find ways to cut costs and margins on the iPad are approaching 30 percent. If Motorola had priced the Xoom at the same price point as the iPad, they would make no more than mere pennies on the dollar at best. Heck, the Xoom might even have been selling at a loss if it were priced like the iPad.
The main reason why I think the tablet wars will not resemble the smartphone wars is that they're different animals. A phone needs less reason to justify its existence. Tablets need more of a reason to justify their existence.
Also, as much as Android has become a successful platform and is trouncing iOS in terms of market share, iOS is far more profitable. At the end of the day, it's profit that matters. Market share is not what's going to help Google develop the next version of Android. Market share is not going to help HTC produce the next great smartphone. Companies like Google and HTC have to earn profits in order to plow that money into new products.