Obviously the AAAA hand is a made up hand but in that case if you got JJ, TT your not only afraid of AA and KQh, also AJ and AT is a big part of his range so if your not folding TT and JJ on the river in 250BB pots thats imo a mistake. Obviously your play also depends on your opponents image as well as your own image Obviously the spots where you can fold a boat with 100BB are very rare, but in deep pots you can definitely get away from your bottom boat.
And on Romanello hand the board was totatly different with the bottom card being paired instead of A being paired considering there are more AX hand in his range then TX hands and you still beat Tx boats that he might valueraise there, but i guess Romanello didn't put any TX hands in his preflop range so its kinda impossible to say if the fold was good or bad with out knowing the whole hand history on that table and how nitty his opponent was.
I guess my point is that a lot of players just call in this spots and write it off to coolers and how unlucky they are instead of actually thinking about a hand.