Fansy THE FAMOUS BARD

[Jimjam]

I think part of the reason there were so many giants is this picture was taken at the very start of sullon zek.

Sand giants share spawns with lower level mobs, so each time these low level mobs in oasis are killed there is a chance a sand giant will spawn in their place. Being the start of the server, and the heart of evil team's hunting ground, basically meant the players in the zone were forcing lots of sand giants to spawn and no one was high enough level to kill them, making them much more common than normal.

That said, I have to agree with the OP that they are a little too rare on this server. Many times you can run through the zone and there isn't even a single sand giant up.