No, that's not it.
i said the crosspins are stronger...
And for that, the spidergears won't eat their way thru the pins, and in the cup. and those metal chips coming from the shafts, will ruin the gears faster too. It doesn't changes the strength of the cup though.
here, i used little metal square parts on the end of the pins to make the diffs stronger. here, observe this picture; (savage diff)
