I own a matched pair of 122s and an SF12, both which I've used and tested quite a bit.
The 122 output as stated earlier is way more, about the same as an average condenser. This mic has better high freq response than the 121 and sound overall is ballsier. On guitar, horns and percussion it's very fat, smooth presence, and is easy to EQ. These things will take tons of EQ and still sound natural.
The 122s didn't make it on OH quite as good as the SF12 but they were very close. The SF12 has a thinner ribbon resulting in a little different high end response, suited very well as OH. Best drum sound I've gotten!
Real pleased with the Royers and consider them keepers in any studio.
Bob