Add to that....Spiderman already had his powers and was already fighting crime without Iron Man.
Iron Man helped Spiderman, he didn't create him like Batman did the Robins.
Spiderman does things on his own and lives his own life. Robin lives with Batman and does very little without Batman's input.
That's just some of the major differences.
And it's not a good comparison at all.Batman created child soldiers to fight his self imposed war on crime and corruption in a whole city.
He showed them little to no affection.