Rip-offs are sad, but the fact that you spent 14 months doesn't make it a better game. It means you took too long to make it. Threes is a great game that has done well, but the vast vast majority of mobile apps don't make enough money to justify spending 14 months on. I really hope that wasn't full time work. Also, time/effort/money spent developing a game does not make it better or worse than other games. Some dead…
Inventing a new game is a creative exercise. I see it like writing a book. iPhone development took years. This reminds me of all the evidence that is pouring from Apple these days on the conference rooms, sketches, mockups etc.
Frankly, the ripoffs are getting the original more exposure, and are probably helping their sales.