I have used both on my windows 7 32 bit system and currently using G-Data 2014 Total Protection.
According to my Experience :
-Overall Features : Both the suites have almost all standard features but in G-Data there is Banking Guard which is save user from attack while online banking and shopping similar feature which is available in avast,bitdefender,f-secure and kaspersky product.
The main
Cons of this feature is that user cannot see any information and notification while doing online banking which leave him confused how the feature work or its not working.
There is debate on how this feature work at wilders which you can find here:
http://www.wilderssecurity.com/showthread.php?t=345194
-Detection Almost the same with G-data have some upper hand as its more aggressive than Trustport
Removal Haven't experienced any infection while this Giants are on machine and haven't tested on VM but what I read from various blogs and sites G-Data win in this race.
G-Data have feature which is known as G-DATA Bootmedium which start scan before your computer starts thus removing some nasty malware which only can be removed when all applications are not running.
BB Hips Both are Silent security Suite and they wre not too talkative. An old style method suites.
Online Banking Already mentioned above. I didn't find any special banking feature in Trustport (correct me if i am wrong)
Etc Standard versions which I downloaded from their official sites use these AV Engines respectively.
G-Data= Bitdefender+ Own Engine
Trust Port=Bitdefender+Avg
G-Data have option which allows you to use only 1 engine While running on demand as well real time protection but they only have option of choosing Engine 1 while I don't find this feature in Trustport.
Trustport have better interface and good looking than G-data and can easily be customize by user as its like.Tweaking the features is also easy in Trustport while you cannot find anything understandable and easy things in G-Data.
Even Blocking Application from G-data Firewall is like winning a battle,and it does not show many things to satisfy its user that it is protection his system.
On lightness G-Data 2014 have improved a lot and I am running it on low spec machine without any problem.
On talking about Trustport lightness I know most of the user will not agree with me but it was one of the lightest suite I used on my PC in last year.
Overall both have their Pros and Cons and it depends on user how and which product satisfy his needs.
Thanks