Hi
4 Vlans, 4 VRRP groups, 2 are active on each QFX10K and 2 are standby.
It's obvious that if QFX10K1 was active for all 4 vlans, traffic will be forwarded through the ICCP link, but this is not the case.
each server sends same amount of traffic, meaning each vlan generates same traffic rate, each 10K gets more or less same traffic rate. but 3/4 of the traffic get passed the ICCP link to be routed.