A small number of judges in a given region to corrupt or coerce, but still doable. Can't say the same for jury candidate selection.

Furthermore, your defense attorney has the opportunity to filter out jurors that have bias against their client. Not so for judges.

randomly selected how? By the order a $9 an hour secretary enters stuff into an excel spreadsheet? In some places yes. Even if it is random(normal case)...random selection of which old rich jaded PHD holding white guy you get? In many places yes.