Well, if I remember correctly, the Radeon 9000 Pro 128 is faster than the 9000 and 9000se. In fact I think the core and memory speeds on the 9000 (at least on the pro) are faster also.
But I think that they are basically the same card only that the 9200 "supports" DX9 and has AGP8x support.
You can check some benches here:
http://www.tomshardware.com/graphic/20031229/index.html