How BIRD chooses best route with confederation

[Yakimus // Netassist NOC]

Hello!

I have an example of working BGP confederation, where, as I supose, the route is chosen not in the best way
Could someone explain why the first route looks better than the second one?

Both are IGP, both have equal preference, but the second one have shorter as_path

BIRD 2.0.12 ready.
Table master4:
194.145.125.0/24     unicast [LVI_v4 2024-11-03] * (100) [AS39063i]
        via xx.xxx.132.22 on eth0.776
        Type: BGP univ
        BGP.origin: IGP
        BGP.as_path: (43426 211288 29390) 39063
        BGP.next_hop: xx.xxx.132.22
        BGP.local_pref: 100
                     unicast [DEAS_v4 2024-11-03] (100) [AS39063i]
        via xx.xxx.132.19 on eth0.776
        Type: BGP univ
        BGP.origin: IGP
        BGP.as_path: (29390) 39063
        BGP.next_hop: xx.xxx.132.19
        BGP.local_pref: 100

-- 
NETassist