Benz doesn't make good trans?

Since when? It is not uncommen for a trans in a W124, W126, or W123 to see 300k+ miles. Heck mine is up to 243k and I know the fluid was not changed from 80k-233k. But she still keeps on ticking except for leaking and a minor slip every now and then. Once I seal it back up I expect this trans to last close to 300k.
Now Ford makes a crap trans.