Good sir, whilst it is laudible that you are keen to test and compare cars, it really would be an idea to get a bit of experience first before passing judgements.
So, please, altho' its not something to get too annoyed about (this just being the Internet and a driving game at the end of the day), it would be a kindness to resist posting comments about ETZ's cars understeering on Motorland when they are set up for a hugely different environment.
The obvious conclusion to jump to is that I am addressing this because I am an insecure 'teen mortally offended that my creations are being 'dissed' by someone new on the block or that I think that my work is the finest ever seen (altho they do suit me very well when I use them for what they are designed for).
Neither of those is the case; I am just trying to nudge you into realising that the game has been out quite a while and some of us have been playing the GT series from the very beginning (of all time it feels like sometimes

). In order for your enthusiasm to be received properly, you need to first get to know what is possible so that you can avoid making comments that illuminate your 'newness' in a negative rather than a positive light.
Enjoy the game and enjoy playing it in the style you enjoy most and I hope that over time you come to see just how 'deep' it is in terms of the driving and tuning experience (within certain limits imposed by the somewhat flawed game mechanics of course).