To be fair: it wouldn't really matter if the condo was actually signed off to Lula. It would be enough just to have been promised -- and accepted -- a condo in exchange for the Petrobras business. The judge pinned a lot of wrongdoings from parties and contractors -- real ones, documented, with real jail time -- on Lula's account. To the judge, and I quote him, "there is no other explanation" for the facts. I think he needs some classes in logic.
I do believe Lula had some knowledge of the quid pro quo demanded by the parties to support him. Heck, if you ask me, I can tell that's what happened for sure. But I know Lula wouldn't have finished his first term had he ruptured the schemes that have been entrenched in the Brazilian society for so many decades. It is very important to understand that Brazil is still a kind of colony, with the chunk of the country shared by a few families. This will sound like a blessing for corruption, but his strategy seems right: to show nothing would be ruptured, as long as he was able to implement some key measures -- and hope for a gradual change that would empower the institutions. One of Lula's first acts in power was to create the legal framework that led to all you can see today.
And it is worth mentioning that 13 years later, when Dilma was being pressured (by those who are now on the jail line) to intervene in the Car Wash investigation, she did nothing of sorts: no changes in heads of the Federal Police, no pressure on the judge. She did publicly criticize the methods of investigation, but let it run wild. That's why she was impeached.
Don't get me wrong: the Car Wash investigation has bore great fruits and it is pleasant to see some characters in jail. But it is important that the investigation be conducted according to the law, otherwise they will be freed in upper courts -- as it has been the case.