So glad you got the info you wanted, Uproden! It's so interesting at times that on this board we have "scientific thinkers" (of which you appear to be one), philosophical thinkers, practical/logical thinkers, spiritual thinkers, emotional thinkers (yeah an oxymoron, I know), intuitive thinkers, etc. And of course most of us are some combination of these things. So someone asks a question from the "scientific mind" and gets answers from all the other perspectives until finally the answer he is looking for comes in!
NO!!
A unit of insulin is measured by its weight when it's in crystaline form, not by how much it lowers blood sugar in any sort of animal or person. It is totally possible that your body metabolizes one insulin so that it does more per unit than another insulin.
For me, one unit of Lantus does at least twice as much as one unit of Regular.