Handicapping horses who drop in class

[whodey17]

We all know that one of the biggest class drops is when a horse goes from MSW to MC. However, I have a hard time handicapping when he horse is dropping from a MSW at Turf Paradise to a MC at Santa Anita (for example). Basically, is a MSW at a lesser track the same as a MC at a track like Santa Anita?

How do you people view this type of drop? Thanks in advance.

Mark