The naval jelly is slightly more corrosive due to a higher percentage of phosphoric and sulfuric acids. I know the MSDS has the same amounts listed, but if you'll notice it's listed as a percentage range (10-30% for phosphoric and 0.1-1% sulfuric). The range is to help protect their exact formulas. If you need to prove it to yourself try litmus paper on each and you'll see the differences. To me the aluminum jelly also seems to have a thinner consistency.
The full name of the aluminum jelly is Loctite Aluminum Jelly Cleaner and Brightener. I couldn't find ANY in my area so a local Tru Value hardware store said they could order it. When they tried they were advised it was being discontinued so they refunded my money and I went looking elsewhere. I ended up finding a vendor on Ebay so I ordered two bottles.
I used it on a gold gilt general service button and it brought out gilt I couldn't even see originally. It also took of the green corrosion quickly.