They are not the same. This isn't an opinion, this is a fact. adidamps2 already went over this:
If you don't understand that different carbs cause different insulin spikes or that different proteins have different amino acid profiles, then let me know. Both of these things mean that the makeup of the food is different in the body.
For example, whey protein is digested MUCH more quickly than real meat. Sometimes this is an advantage, like post workout but other times it isn't optimal, such as before bed.
If you want a liquid diet that is equal to that whole food diet, then put those whole foods in the blender. Then what you have is equivalent.
btw: Most of us will eat a sweet potatoe with that steak dinner, not a baked potatoe. Why? Because the GI of the sweet potatoe is lower.