Error rate and Luck adjusted result

[Francesco Ariis]

Why are (sometimes) Error rate and Luck adjusted result discordant?

I try analyse every match I play. Now and then The Error rate stat
and the Luck adjusted result are discordant: that is, one player seems
to have performed better — sometimes, way better — in one stat and worse
— sometimes, way worse — on the other.

I understand these are two different calculations and cannot be compared
with simple algebra. Can someone come up with a simple example where why
Error rate is lower than my opponent but the Luck adjusted result is
in his favour?

Thanks and happy rolls
—F