Hmm, I'm a bit annoyed that you proposed that the SVG is wrong.
Let me explain, current: left powerbar, 3 segments, LCD pin X. left weapon pickup, LCD pin X
right powerbar, 3 segments, LCD pin Y. right weapon pickup, LCD pin Y.
Swapped: left powerbar, 3 segments, LCD pin Y. left weapon pickup, LCD pin X
right powerbar, 3 segments, LCD pin X. right weapon pickup, LCD pin Y.
This would mean the LCD pin traces of X/Y get crossed, it's not possible on a 1-layer LCD panel. Here, my annoyance is not large, I can still joke about it:
I have the original device, and this doesn't look like a MAME bug. Just been testing... horrible game, and weapon and energy do appear to be the wrong way round, but that would be accurate to real hardware. Hope this helps - let me know if more evidence is needed.