Universal bit v dutch gag?

[Butterbean]

OK I'm probably being dim here but is a "universal bit" eg KK Conrad Universal Bit in effect just a truncated version of a normal 3 ring dutch gag? Are the top rings set at a slight angle? - its hard to tell from the photo but the right hand one looks a bit odd.
Anyone used one?

 

[Bess]

It might look like a truncated Dutch Gag but it has a lozenge in the middle of the bit. The top ring is set slightly outside the main ring.

 

[misshubblebubble]

Anyone know why?
Speaking of similarities - whats the difference between a wonder bit and a bubble bit? apart from the angled holes.
thanks.

 

[ann-jen]

The little holes at the top are slightly off set so it is easier for the cheekpieces to slip round them when a pull on the rein exerts the leverage action - if that makes sense.