The KLJ-7 used on the JF-17 I has 105/85 km range for Air/Land targets and can track 10 and target 2 targets simultaneously. The 7V2 version used on the JF-17 II has an increased air-to-air range of 130 km and possibly other improvements.
The RC400 was stated, by Thales, to have a 20% decrease in range over the RDY radar for air-to-air due to lesser power consumption. One edge it has over the KLJ-7 is the number of targets it can track/target simultaneously are 24/8.
Although the RC400 has inferior range that wouldn't have been a problem as the JF-17 program developed further. One advantage that would've come of this would've been the compatibility of the radar with Erieye AEWACS. Diminishing the need to operate another platform (ZDK-03).
Personally, I think the JF-17 should've had more Western origin subsystems to reduce dependency on the Chinese and to have a more of an export appeal.
How does the RC400 and the ground attack capabilities of the Horus compare to the Grifo M3/ SAGEM FLIR and our ROSE I/III and how likely is it that at least some of these birds might become operational?