Found an interesting article here with some info on different hot sauces (see at bottom for first bit of list):
The Scoville Heat Scale for Chilli Peppers and Hot Sauces from ChilliWorld. Compare relative heats all the way to Blair's 16 Million Reserve, pure capsaicin.
Does not talk about the two sauces I noted though did note the info about scotch bonnets in general.
With scorpion peppers, I have always found them milder except one sauce when one friend brought a bottle straight from Trinidad which was, 'fresh off the tree', hottest thing I ever tried.
Then again, fresh off the tree is always going to be hotter than what you get in a bottle normally...
Tried a ghost pepper once but it had been frozen so was not as hot as the fresh scorpion sauce. I am not a fan of those (the ghost peppers) cause unlike scotch bonnet and scorpion peppers it is pure heat in my view, no flavour at all. Scotch bonnet and scorpion both have heat AND flavour (and as noted, if you cook them in foods without piercing them they are much milder - plus you can rinse freeze and reuse so you get to use them multiple times for some good flavourful cooking). In my area scotch bonnet (both sauce and peppers are easy to find (they sell it at major stores all over Greater Toronto Area from Hamilton to Oshawa to Barrie), scorpion not so much.
List from website link above:
Scoville Heat Units Chilli Pepper / Hot Sauce
16,000,000,000 Resiniferatoxin - RTX (ultrapotent analog of capsaicin).
16,000,000 Pure capsaicin and Dihydrocapsaicin
16,000,000 Blair's 16 Million Reserve, from Gardner Resources, Inc.
16,000,000 Blair's 6 A.M., from Gardner Resources, Inc.
13,500,000 Blair's 2005 Halloween Reserve from Gardner Resources Inc.
9,100,000 Nordihydrocapsaicin
8,600,000 Homodihydrocapsaicin and Homocapsaicin
7,100,000 The Source, from Original Juan Specialty Foods
5,500,000 Blair's 5 A.M., from Gardner Resources Inc. - No Longer available
5,300,000 Police grade Pepper spray
4,000,000 Mad Dog 44 Magnum Pepper Extract, from Ashley Food Company, Inc.
4,000,000 Blair's 4 A.M., from Gardner Resources Inc. - No Longer available
2,000,000 Common Pepper spray
1,569,300 - 2,200,000 Carolina Reaper Pepper (PuckerButt Pepper Company, Fort Mill, South Carolina).
1,500,000 - 2,000,000 Blair's 3 A.M., from Gardner Resources Inc.
1,500,000 Da' Bomb The Final Answer, from Original Juan Specialty Food
1,463,700 Trinidad Scorpion Butch T (Hippyseeds Pepper, Australia)
1,382,118 Naga Viper pepper (Chilli Pepper Company, England)
1,100,000 Blair's Ultra Death Sauce from Gardner Resources Inc.
1,086,844 Chillipepperpete Naga from ChilliPepperPete (source ChilliPepperPete.com)
1,067,286 Infinity Chilli, from Fire Foods of Grantham, Lincs.
1,041,427 Naga bhut jolokia pepper, Assam India (C. chinense / C. frutescens hybrid)
1,000,000 Cool Million Pepper Extract, from the Poison Pepper Co.
1,000,000 1 Million Scoville Pepper Extract, from Ashley Food Company, Inc.
923,000 The Dorset Naga Pepper, from Peppers by Post
855,000 (reported) The Naga Jolokia pepper (Capsicum frutescens), not confirmed
800,000 - 1,000,000 Dragon's Blood Sauce from ChilliPepperPete (source ChilliPepperPete.com)
800,000 Satan's Blood, from Sauce Crafters Inc.
750,000 Mad Dog 357 'Silver' Limited Edition, from Ashley Food Company
700,000 The Slap Heard Around the World, from Tiguana Flats
600,000 - 900,000 Blair's 2 A.M., from Gardner Resources, Inc.
600,000 Mad Dog 357 with Bullet Keychain, from Ashley Food Company
550,000 Blair's Mega Death Sauce, from Gardner Resources, Inc.
500,000 - 750,000 Dave's Insanity Private Reserve, from Dave's Gourmet (estimated)
500,000 Pure Cap, from Garden Row Foods
400,000 - 500,000 Z Nothing Beyond Hot Sauce, from CaJohns Fiery Foods Company
400,000 - 500,000 Spontaneous Combustion Powder, from Southwest Specialty Foods Inc.
357,000 Mad Dog 357 Hot Sauce, from Ashley Food Company
350,000 - 577,000 Red Savina habanero (Capsicum chinense Jacquin)
350,000 Marie Sharp's Belizian Heat, from Marie Sharp's Fine Foods, Ltd.
283,000 Blair's Possible Side Effects, from Gardner Resources, Inc.
250,000 Vicious Viper, from CaJohns Fiery Foods
250,000 Dave's Ultimate Insanity Sauce, from Dave's Gourmet (estimated)
234,000 Da' Bomb Ground Zero, from Original Juan Specialty Foods
225,000 You can't Handle this Hot Sauce, from Peppers
225,000 Not Cool Chocolate Habanero from Bahama Specialty Foods, Inc.
180,000 Dave's Insanity Sauce, from Dave's Gourmet (estimated)
175,000 Predator Great White Shark, from Peppers
150,000 Mad Dog Inferno Reserve, from Ashley Food Company
125,000 Crazy Jerry's Mustard Gas, from Crazy Jerry's, Inc.
119,700 Da' Bomb Beyond Insanity, from Original Juan Specialty Food
100,000 - 350,000 Habanero (Capsicum chinense Jacquin)
100,000 - 325,000 Scotch bonnet (Capsicum chinense)
100,000 - 225,000 Birds Eye pepper
100,000 - 200,000 Jamaican Hot pepper
100,000 - 125,000 Carolina Cayenne pepper
...
450 FRANK'S® REDHOT® Original, from Reckitt Benckiser Inc. (included this one to put it all in perspective).