Another difference is that Trim Restore is PD based, and Natural Look is water based.
NL can feel a little greasy if you put too much on, but if you wipe it afterwards, it shouldn't be a problem. Also, if it seems too glossy, use a water dampened cloth to wipe it after. This should tone it down.
Also, if you find that NL is too glossy (Hey.. it could happen!) you can dilute it with water to meet your preferences.
NL also has "mild" cleaners in it. I say "mild" because I've used it to clean up some pretty badly mucked up plastic. (Nicotine stains, dirt, etc.) Dwell time is important here. If you just spray and wipe, you likely won't be too impressed. To test it, try spraying a little in the middle of the dirty area. Let it sit for a few seconds, then wipe. You should end up with a clean spot in the middle of the dirt! :bigups
Other uses are: spray into your vents to kill the bacteria growing in there and as a spot carpet cleaner (if it's nylon/polyester carpet).
TR is, as mentioned above, used to restore faded exterior trim.
Hope this helps!