I agree and I can't feel any gears in my G-27 either. That is just nonsense.
I also have both as well as I had a DFGT (also decent wheel) that my Great Dane decided to eat the rim on one day while I was at work. Should have named him Mario.
The only, and I mean only, thing wrong with the G27 is that a few buttons are not supported-
and they never will be. Here is proof of that:
Here is a message and reply I got from Logitech on the issue:
Customer (xxxxx) 12/19/2010 05:30 PM
When are you going to work with Poly to get full PS3 / Gran Turismo 5 support for this wheel?
This is pathetic. To sell a $300.00 US wheel that barely is supported?
And their response -Note I took out all the names and replaced with xxx:
Response (xxxx) 12/23/2010 09:58 PM
Dear xxx,
Thank you for contacting the Logitech Customer Care Team. As you reported, you wanted to know the compatibility status of your steering wheel. Don't worry, I would be glad to help you with this concern.
I'd like to inform you that the Gran Turismo 5 is compatible with the G27 racing wheel on PS3 game console. Please click on the link below to view the details of the G27 racing compatible games.
http://www.logitech.com/en-us/gaming/wheels/devices/5184
If the above does not address your concern, please update this incident, describing the results after following my suggestions. Or, if you prefer, you can contact us directly by the phone numbers listed below. Your case no. is xxxxx.
Thank you for choosing Logitech.
Sincerely,
xxx
Logitech Customer Care Team
www.logitech.com/support
Australia
Customer Support
1800 025 544
Monday - Friday: 9am - 8pm (AEST)