From what I understand, he just wanted to get it out there. He has been working on the sound for awhile, but the actual gameplay is SOLID. I mean, 1:1 really. With PSX4Droid, FFVIII cant even get to the world map, and most other games would slow to a crawl. This one doesnt, its great. The developer is a lot more involved as well.
Also, this utilizes a devices GPU, rather than place all the strain on the CPU. That's why you get such smooth playback.