It might be true that he assisted Allison a lot like he says and that he looked after the children, too. This is only evidence of fatherhood, not being a miracle-worker. However if he wants to be found not guilty he and his lawyer have to establish with as much force as possible that Allison was likely to commit suicide, and in order to do so he and his team have to forcibly ram home the suicide theory, showing that Allison was incapable of leading a normal day-to-day life. If I'm correct, his team must initially present an alternative theory (suicide) and then stick with this theory (I don't think they can change their defence argument part-way through... but I haven't looked up what the law is here in QLD for that. Maybe it's an American court-only rule, but I doubt it - otherwise courtrooms would turn into a circus?) However I believe a lot of his testimony is contradictory - e.g. how could he be home every day at 5pm to help with the kids if he admitted he stayed late at work about 4 times a week to conduct his affair with Toni? That's why he's getting a lot of mudslinging in his direction - most of his statements don't add up.