x1=j1 is closer to x2=j2=z1 than (x1 is to) x3=z2 in property / quantity x4=j3 by amount / excess x5=z4.
This is not jbimau, which uses «-mau» to insert zmadu2 at x2 (and append zmadu4), and means ‘closer to something than something else is’. maujbi means ‘closer to something than something’. The former compares x1; the latter compares x2.