I sincerely doubt it:
X850XT AGP
Fragment Pipelines: 16
Vertex Pipelines: 6
Texture Units: 16
256-bit Memory Bus, GDDR3 RAM
X1300PRO (PCI-E version, but I doubt the AGP version is superior; in fact it's probably inferior):
Fragment Pipelines: 4
Vertex Pipelins: 2
Texture Units: 4
128-bit Memory Bus, DDR RAM
The X1300Pro is clocked a bit faster but it doesn't matter with so few pipelines and a 128-bit memory bus. The X850XT seems to be VASTLY superior. The only thing the x1300pro has the X850XT doesn't is SM 3.0 and HDR support, but it's so slow it would be foolish to try to exploit those features on that card.