Quite a few less players are required to down Belinda than Galvatron.

In full conquest gear, during 4.1, my 4x Frost DK's with the support of an equally geared Holy Paladin could not down Galv on several dozen attempts.
The fear and the AoE attack sucked.

My group would easily take out 2-3 Horde who were successfully half-grouping Belinda.

Stopping my toons (on mounts) 2-3 times for the stragglers (on auto follow) to catch up... to not lose a toon enroute to Galv...
That results in Galv dying before my team can get there (in 4.3), and that is only maybe a 10-15 second delay compared to the first alliance to reach Galv.
So in the current patch, there's a great chance my team would be able to down Galv or Belinda solo and with ease, once geared.



Not saying the map favors one faction over the other.
But being able to get to Galv faster than Belinda, does not make the encounters equal.