I've been waiting, but no-one came up with it, so....

Did you hear about the mechanic who was engaged to a lady contortionist?

She broke it off!

He DID put it into the hands of his solicitor/lawyer, but the solicitor said it would never stand up in court.

More seriously, you can break any screw-head off (up to 10G) with a power driver, even 12volt, but it should only be by trying to take them out. If you have to use that sort of torque putting them in, you should have drilled a pilot hole first. Particularly for stainless-steel screws.
You'll also shatter bit tips, which are often over-tempered.
Philips bits have thin blades, but the screws are easiest to 'bog'/fill over.

Pozidrive are fractionally better, but the bits seem to wear faster.

Robertson/square stay on the bit. JohnMc, with the other hand I'm holding something I'm screwing onto something else. These screwheads are the most difficult to bog up, a bigger recess.