DOn't know if this still holds true but when I had my boat painted with Awlgrip 10 yrs ago, the painter described it as a "harder" finish paint and said Imron had a "softer" finish. Whatever that means.
Awlgrip does hold its gloss for a long time.
Joel Albert, Potomac MD
"Charlie B" - 1988 32' FBS
Twin 318's/FWC/16x15 nibral props
docked Deale, MD