Same coverstock, solid vs pearl version.

[Ball99999]

How big of a jump is there?
Like the Brunswick Nexus was great for heavy oil, how good would the pearl version been in medium-light oil?

How big of a jump between solid and pearl of the same coverstock I mean.

[kmf]

The solid was sanded and the pearl polished. Both are a type of cover stock so they can't truly be the same but I think I understand what you mean. The solid is a good heavy oil ball but the pearl seems better suited to medium-heavy to medium. Using the pearl on medium-light would depend on how you bowl and how versatile a bowler you are. If you can add a few revs and reduce the axis rotation it would work fine. Or pick the speed up about 2 mph.
This all assume the variables are all the same including lay out and type of lane.

[Ball99999]

The solid was sanded and the pearl polished. Both are a type of cover stock so they can't truly be the same but I think I understand what you mean. The solid is a good heavy oil ball but the pearl seems better suited to medium-heavy to medium. Using the pearl on medium-light would depend on how you bowl and how versatile a bowler you are. If you can add a few revs and reduce the axis rotation it would work fine. Or pick the speed up about 2 mph.
This all assume the variables are all the same including lay out and type of lane.

Oh the Nexus? yeah but otherwise there is no relation between a solid being sanded and a pearl being polished..

I am not referring specifically to the nexus but just solid vs pearl in general like how deep a difference is there.

[kmf]

Generally speaking, solids are slightly more aggressive than pearls. Pearls can usually clear the heads cleaner though and are more forgiving in over-under conditions. Solids usually like to read the lane sooner. The differences are more to have the ball fit the bowler style better rather than oil differences. Strokers tend to have lower revs and play close to the dry. A solid may tend to read too early as it hits the friction earlier, especially as the line burns up where as a pearl will get to the mid-lane cleaner before reading the lane and making a move. There is no perfect match, just best match available.