I agree^^. I've seen video of Michael as a 14/15 yo taking care of baby Taj. Then Michael brought them out on stage (with a bunch of family) on the last night of the Victory tour and was trying to make them dance. I also saw a pic of little 3T with Michael when he got his star on the walk of fame. There's also other pics of Michael and 3T during the thriller time. Then in the mid-90s, MJ helps them with their recording career. A lot of the nieces and nephews are into music, but I think Taj, Taryll and TJ are the only ones that MJ helped publicly.
I guess the last testament to Michael's closeness to Tito's boys is that all three are named as secondary recipients to Michael's estate in the will/trust.
I also sort of think he is close to Austin, as well. I read on Austin's myspace blog that MJ flew Austin out to see him during the History tour because Austin called him and told him he missed his uncle.
But I feel for TJ and the rest of the family. This was so unexpected and it should not have happened in the first place. It must have been as shocking to them as their mother's death.