kennyboy1984
I see what your saying, and to a certain extent, yes, fish in FO systems will tend to have more battle scars etc. than those placed in reef tanks. However there are trade offs......
What I am about to say is a generalization - so please don't anyone jump down my throat!
A reef tank, with lower stocking levels, higher water quality, and more natural environment will probably result in certain fish species showing better colours etc and looking less "beaten up". However, what a reef tank does not afford is the heavy feeding regimes that big fish require..... but usually you do not see many bug fish in reef tanks
An FO (or FOWLR) tank however is characterised by bigger, tougher fish, that need plenty of food - and they tend to get it in FO tanks, without worrying so much about water quality (that would effect corals). This results, in my opinion, in fish growing larger and being healthier (in general).
So as a trade off, I think rough and tumble fish, particularly fish like triggers, are over all just as healthy, inspite of a few battle scars.
There are of course exceptions - large reef tanks, mega-flow, huge sumps, and relatively very few large fish - anf a generous diet....... but these tend to be exceptions.....