No, and the laws of physics say otherwise. The tension increases when the length of string that is under tension is increased, not the 'speaking' length of the string. Hence string-thru-body does have a small increase in tension, and basses with separate tailpieces might also have similar. The one way I know of to make intonation easier without moving the bridge physically is to use contact-core strings, as it's the diameter of what goes over the saddle that makes the difference. For example, on my 51RI, if I were to string it with Rotosound 99s, even its 2-saddle bridge is easy to intonate, because the strings are, as far as the bridge is concerned, just about the sme diameter - the core wires.