This is a little more complicated than a yes or no broad brush ruling. It would need to be looked at closely and probably have some statistical analysis to go behind it. Stk & SS will show different numbers of course. Some classes have sticks and autos where the auto gets a generous break. I'll use my SS/L index 11.25 as an example while SS/LA is 11.45. Some classes have the same index for both. L/SA and L/S are both 12.70 after a small .05 jump from K/SA while the jump from J/SA to K/SA is .20. Going down the alphabet, sometimes the jump is .15-.20ish and then it's .05 or .10 so some indexes don't really make sense either.
Draginsights Analytics tab shows the quickest runs made in each class since 2015.