Olympus has to Support most of the 4/3 lenses (because most of them its from themselves
) with limited AF ability so most of the 4/3 lenses still has AF function in their M4/3 body
while
Panasonic choose not to backward compatible anything thats with slow AF speed at all, of course they didn't had alot of 4/3 lenses anyway
. EVEN one of the 4/3 lenses that alot of 4/3 user likes (and owned) - The Leica D 14-50 f2.8-3.5 ASPH
They choose NOT to support this lenses - one from their own
they abandon their 4/3 load, start fresh and all in into the M4/3 system to come up with a new fast AF system. (And did a very good job
- anyone remember their L1?
)Due to this reason the Gs will always be faster than the EPs
Ref.
A link for Panasonic G series AF compatibility
A link for Olympus EP series AF compatibility
--------------------------------------------------------------------------------
Although both companies make M4/3 cameras/lenses (Or maybe more will join in the future, let's pray together
) they choose to go different ways:The Olympus's - EPs are more for people who already had experience with photography (Especially if you are a 4/3 or any old MF lenses system user) due to:
1) 4/3 backward compatibility
2) built-in IS for any lenses (Or the rumor we discuss this week - the holy grail AF adapter ring)
3) More professional/custom setting's in the menu (but a drawback for newbies e.g. my gf she likes the GF-1 menu more than the EP-1, she thinks that the EP's menu is too too too complicated and give up on using it
)The Panasonic's - Gs on the other hand are more for users upgrade from DCs due to:
1) More user friendly menu compare to the Olympus's
2) Faster AF speed (One feature that ANYONE will think that it is a BETTER camera DIRECTLY)*anyone - people don't know anything about camera at all "One of the M4/3 system's PRIMARY target user"
3) Better LCD screen (Another feature that INSTANTLY wins for all) - when I go out take pictures with my gf, she checks the photo I took on the EP-1 and always said "how come the photos you took are so blurry/ugly
"DSLR -> M4/3 --- Olympus EPs
DC -> M4/3 --- Panasonic Gs
Olympus try to use the EP-L1 to cover its gap I don't think it can win the GF-1 in many many ways
As for 4/3 system's future without the mirror - please add ALL the wishes we discussed so far
1) built in AF for all lenses AND FAST
2) 3CCD senors with very high pixel/ISO
3) built in shift n tilt
4) kick ass EVF
5) Kick ass flip/turn LCD
6) kick ass HD video with no time limit
7) shutterless
--------------------------------------------------------------------------------
*I have a EP-1 for myself and a GF-1 for my gf so that we can go and take pictures together
and I don't have any 4/3 lenses so we love the GF-1 more due to the reasons I stated above and waiting on the upcoming G2/GH2 But I'll always pray for Olympus to come up with some crazy ideas e.g. AF adapter ring
so please 
and also for god's sake upgrading the LCD ASAP or else
Not to mention their 3 months Per upgrade(EP-2)/price drop(EP-L1)........my
plan: (I don't have most of these items, they are just plans/dreams)GF-1 for GF use only
G2/GH2 for my own use
EP-1 or EP-XXX for:
1) MF old lenses, maybe some prime 4/3 lenses and any other lenses
2) when I think the G2/GH2 is too big under some condition and
3) Most importantly - serves as a 2nd body and take with me when needed, so I don't have to change lenses often. *G2/GH2 with zoom lenses (e.g 14-45, 14-42, 14-140, 14-150, 45-200, 100-300 etc....) and EP-1/XXX with wide angle (e.g. 7-14, 9-18) or fixed focal (e.g. 20 f1.7,17 f2.8 etc....) or anything else (e.g. Leica's, Zeiss's, lensbaby's, fisheyes's, shift n tilt's etc..........dreaming
)End of article - I just want to share my thoughts so please don't "mouth cannon" with me, I'm just a newbie trying to learn how to take pictures. Thanks for reading and discuss together. Let's
together 
