The percentile scores pertain only to the written test as declared by any other test, be it CAT, XAT or otherwise. There cannot be consolidated scores as only a fraction of the candidates get to attend the GD/PIs.
The reason why the percentiles are not declared before itself is to ensure a fair process during the GD/PI for every candidate where everyone is evaluated on the same level.
I think the notion that FMS admissions have a high weightage for written (as high as 70%) can be laid to rest now. Even during admissions for last year's batch, there were some people who had very high percentiles but still did not make it. Seems like more importance is being given to the GD/PI performance, especially the extempore.
Now that the results are out, confirmed candidates party:drinking:and w/l candidates enjoy the wait....
(I was w/l 4 in 2007 and had to wait for 2 months before I could pay my fees