That's not accurate. As I posted, the P&W 305 on the Lear60 had the dulled, slightly rough inlets and we were told they should never be polished like the inlets on the earlier Lears because the finish was related to the ENG ANTI-ICE. Seeing the IAE V2500 on the A320 has the same finish, I'm curious as to the actual engineering reason, if there is one.
It very well could be that the inlet was shiny from thousands of hours of being polished by rain, bugs, and rampers' sweat. The difference between the two engines in question was enough to catch my attention on the preflight.