Stats of any schematic vary on the quality and amount of the crafting materials. A level 1 schematic can utilize level 1, 2 or 3 cloth/leather/metals, so the final stats of any schematic can vary widely. There is no "base stat" of any given schematic that I know of. It also depends on what "slot" you place the materials in, defensive, offensive, ect. The crafting station will show you the various results before you click the "confirm changes" button. As far as on-screen comparisons of weapons & armor already equipped, you won't be able to do that until the item is created and you go into the inventory and compare the created item to all companions equipment. For example, if you're creating a new mage armor, look at what all your mages are wearing before going into the crafting table. I generally do one type of equipment at a time so I don't confuse myself. Armor & weapon crafting is a great way to add stats to your characters.