It does indeed use the same file-system as the Vibrant. The 2.2 update does speed the phone up substantially though. Personally, I'm waiting for krylon from Team Whiskey to get his hands on a SGS4G (sometime this week) and then we'll have sick custom roms to choose from that will benefit us greatly!
Samsung Galaxy S II
Kernel: Jugs 0.3 UV-BLN-CRT
Samsung Galaxy Tab 10.1
STOCK w/ root, busybox, CWM.
Retired: Samsung Galaxy S 4G, Samsung T959 Vibrant/Galaxy S, HTC Dream (G1) Bronze
Want more room for apps on your SGS4G?? Try my 1-click Fota Fix.
T-Mobile USA Sales Rep in Highlands Ranch, CO.
9338 Dorchester Street, Highlands Ranch CO