I'll answer your questions as asked and then add a few comments. Scott made a wide range of Original Quality grade guns. The guns fit into the hierarchy appropriately for grade and the Scott name is of Brand Value level three. I believe Webley bought Scott in the early 1890's.

Now, some commentary. Brit gunmaking companies were usually headed by a master maker or, at least, the shop was. "Master" is strong evidence that they could make a "best" Original Quality grade gun. The trick was attracting commissions to make such guns. Remember, most "best" OQ grade guns were "bespoke" - very few would have been "bought off the peg." Since "best" gun commissions weren't easy to come by, almost all made lines of lower grade guns. But, even the lowest grade of Brit gun is still of sound construction. There was no Brit OQ grade equivalent to the "JABC" guns from Belgium (never forget, though, that many "best" grade guns were also made in Belgium!!).

Hopefully, you can now see that the maker's name on the gun is not an adequate indicator of the Original Quality grade of that individual gun. The maker's name does, for sure, impact price by virtue of Brand Value. Scott is a Brand Value three maker's name. For guns of equal Original Quality grade and equal Current Condition level, BV3 will price at half of a BV1 and 2/3 of a BV2.