'High Mass' bridges are a bit of a con. We're attracted to them because they look all lovely and chunky, like a fat little puppy but in actual fact the mass of the thing makes very little difference.
Babicz are an exception as they have re-designed their saddles so that more of the string is in contact with the saddle. How much difference this actually makes in the real world though I don't know. You could probably tell the difference with an oscilloscope and some crocodile clips attached to your downstairs parts though.
Now if the actual bridge plate had a larger surface area (not mass), this [u]could[/u] make a difference, as would having the strings through the body and anchored in the back.