> The court should consider the validity of the arguments against them and the facts of the case.
I've won two default judgements and that's precisely what happens. Of course, judges are not investigators. They consider the facts _as_presented_by_the_parties_. If one party doesn't show up, the judge doesn't hear their side of the story. The party who does show up still has to make a "prima facie" case, meaning that they briefly explain why they should win. The judge then considers the facts they present and their arguments and makes a decision. It's not too unusual the only party who shows up doesn't get EVERYTHING they want. They'll probably "win", meaning get most of what they want, though not always.
In one of my two cases, I showed the judge that what I was asking for was completely fair to the other party, that they would probably agree to it (which in fact they had, but we needed the court to make it official). The judge was interested in seeing that it was fair - he wasn't going to give me a default judgement that was clearly unfair to the party who didn't show up.
The losing party who didn't show up can then appeal. I had that happen with an insurance company. Their insured hit my car and it was his fault. When they didn't answer phone calls or letters, I sued. They didn't show up, allowing me to get a default judgement. I guess they were hoping I wouldn't show up either, because the very next day they filed an appeal - meaning they WERE paying close attention to the case. It's entirely possible they even had someone in the courtroom to see me win the default judgement, choosing to see if I would blow my own case in the default hearing before they paid their attorney to show up.