 This is strongly implied to be true when Ben spins organic webs to save both himself and Mary Jane after being thrown off a bridge by the Green Goblin, something neither Peter nor May can do.Despite being a baby, he was also strong enough for Mary Jane to hold on to without hurting him.It is also known that Peter is the only one who can get him to burp "in the morning" (as Mary Jane says it) by feeding him chili.